cef/include/base/cef_tuple.h

// Copyright (c) 2014 Marshall A. Greenblatt. Portions copyright (c) 2011
// Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//    * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//    * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//    * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// A Tuple is a generic templatized container, similar in concept to std::pair.
// There are classes Tuple0 to Tuple6, cooresponding to the number of elements
// it contains.  The convenient MakeTuple() function takes 0 to 6 arguments,
// and will construct and return the appropriate Tuple object.  The functions
// DispatchToMethod and DispatchToFunction take a function pointer or instance
// and method pointer, and unpack a tuple into arguments to the call.
//
// Tuple elements are copied by value, and stored in the tuple.  See the unit
// tests for more details of how/when the values are copied.
//
// Example usage:
//   // These two methods of creating a Tuple are identical.
//   Tuple2<int, const char*> tuple_a(1, "wee");
//   Tuple2<int, const char*> tuple_b = MakeTuple(1, "wee");
//
//   void SomeFunc(int a, const char* b) { }
//   DispatchToFunction(&SomeFunc, tuple_a);  // SomeFunc(1, "wee")
//   DispatchToFunction(
//       &SomeFunc, MakeTuple(10, "foo"));    // SomeFunc(10, "foo")
//
//   struct { void SomeMeth(int a, int b, int c) { } } foo;
//   DispatchToMethod(&foo, &Foo::SomeMeth, MakeTuple(1, 2, 3));
//   // foo->SomeMeth(1, 2, 3);

#ifndef CEF_INCLUDE_BASE_CEF_TUPLE_H_
#define CEF_INCLUDE_BASE_CEF_TUPLE_H_
#pragma once

#if defined(BASE_TUPLE_H_)
// Do nothing if the Chromium header has already been included.
// This can happen in cases where Chromium code is used directly by the
// client application. When using Chromium code directly always include
// the Chromium header first to avoid type conflicts.
#elif defined(USING_CHROMIUM_INCLUDES)
// When building CEF include the Chromium header directly.
#include "base/tuple.h"
#else  // !USING_CHROMIUM_INCLUDES
// The following is substantially similar to the Chromium implementation.
// If the Chromium implementation diverges the below implementation should be
// updated to match.

#include "include/base/cef_bind_helpers.h"

namespace base {

// Traits ----------------------------------------------------------------------
//
// A simple traits class for tuple arguments.
//
// ValueType: the bare, nonref version of a type (same as the type for nonrefs).
// RefType: the ref version of a type (same as the type for refs).
// ParamType: what type to pass to functions (refs should not be constified).

template <class P>
struct TupleTraits {
  typedef P ValueType;
  typedef P& RefType;
  typedef const P& ParamType;
};

template <class P>
struct TupleTraits<P&> {
  typedef P ValueType;
  typedef P& RefType;
  typedef P& ParamType;
};

template <class P>
struct TupleTypes {};

// Tuple -----------------------------------------------------------------------
//
// This set of classes is useful for bundling 0 or more heterogeneous data types
// into a single variable.  The advantage of this is that it greatly simplifies
// function objects that need to take an arbitrary number of parameters; see
// RunnableMethod and IPC::MessageWithTuple.
//
// Tuple0 is supplied to act as a 'void' type.  It can be used, for example,
// when dispatching to a function that accepts no arguments (see the
// Dispatchers below).
// Tuple1<A> is rarely useful.  One such use is when A is non-const ref that you
// want filled by the dispatchee, and the tuple is merely a container for that
// output (a "tier").  See MakeRefTuple and its usages.

struct Tuple0 {
  typedef Tuple0 ValueTuple;
  typedef Tuple0 RefTuple;
  typedef Tuple0 ParamTuple;
};

template <class A>
struct Tuple1 {
 public:
  typedef A TypeA;

  Tuple1() {}
  explicit Tuple1(typename TupleTraits<A>::ParamType a) : a(a) {}

  A a;
};

template <class A, class B>
struct Tuple2 {
 public:
  typedef A TypeA;
  typedef B TypeB;

  Tuple2() {}
  Tuple2(typename TupleTraits<A>::ParamType a,
         typename TupleTraits<B>::ParamType b)
      : a(a), b(b) {}

  A a;
  B b;
};

template <class A, class B, class C>
struct Tuple3 {
 public:
  typedef A TypeA;
  typedef B TypeB;
  typedef C TypeC;

  Tuple3() {}
  Tuple3(typename TupleTraits<A>::ParamType a,
         typename TupleTraits<B>::ParamType b,
         typename TupleTraits<C>::ParamType c)
      : a(a), b(b), c(c) {}

  A a;
  B b;
  C c;
};

template <class A, class B, class C, class D>
struct Tuple4 {
 public:
  typedef A TypeA;
  typedef B TypeB;
  typedef C TypeC;
  typedef D TypeD;

  Tuple4() {}
  Tuple4(typename TupleTraits<A>::ParamType a,
         typename TupleTraits<B>::ParamType b,
         typename TupleTraits<C>::ParamType c,
         typename TupleTraits<D>::ParamType d)
      : a(a), b(b), c(c), d(d) {}

  A a;
  B b;
  C c;
  D d;
};

template <class A, class B, class C, class D, class E>
struct Tuple5 {
 public:
  typedef A TypeA;
  typedef B TypeB;
  typedef C TypeC;
  typedef D TypeD;
  typedef E TypeE;

  Tuple5() {}
  Tuple5(typename TupleTraits<A>::ParamType a,
         typename TupleTraits<B>::ParamType b,
         typename TupleTraits<C>::ParamType c,
         typename TupleTraits<D>::ParamType d,
         typename TupleTraits<E>::ParamType e)
      : a(a), b(b), c(c), d(d), e(e) {}

  A a;
  B b;
  C c;
  D d;
  E e;
};

template <class A, class B, class C, class D, class E, class F>
struct Tuple6 {
 public:
  typedef A TypeA;
  typedef B TypeB;
  typedef C TypeC;
  typedef D TypeD;
  typedef E TypeE;
  typedef F TypeF;

  Tuple6() {}
  Tuple6(typename TupleTraits<A>::ParamType a,
         typename TupleTraits<B>::ParamType b,
         typename TupleTraits<C>::ParamType c,
         typename TupleTraits<D>::ParamType d,
         typename TupleTraits<E>::ParamType e,
         typename TupleTraits<F>::ParamType f)
      : a(a), b(b), c(c), d(d), e(e), f(f) {}

  A a;
  B b;
  C c;
  D d;
  E e;
  F f;
};

template <class A, class B, class C, class D, class E, class F, class G>
struct Tuple7 {
 public:
  typedef A TypeA;
  typedef B TypeB;
  typedef C TypeC;
  typedef D TypeD;
  typedef E TypeE;
  typedef F TypeF;
  typedef G TypeG;

  Tuple7() {}
  Tuple7(typename TupleTraits<A>::ParamType a,
         typename TupleTraits<B>::ParamType b,
         typename TupleTraits<C>::ParamType c,
         typename TupleTraits<D>::ParamType d,
         typename TupleTraits<E>::ParamType e,
         typename TupleTraits<F>::ParamType f,
         typename TupleTraits<G>::ParamType g)
      : a(a), b(b), c(c), d(d), e(e), f(f), g(g) {}

  A a;
  B b;
  C c;
  D d;
  E e;
  F f;
  G g;
};

template <class A,
          class B,
          class C,
          class D,
          class E,
          class F,
          class G,
          class H>
struct Tuple8 {
 public:
  typedef A TypeA;
  typedef B TypeB;
  typedef C TypeC;
  typedef D TypeD;
  typedef E TypeE;
  typedef F TypeF;
  typedef G TypeG;
  typedef H TypeH;

  Tuple8() {}
  Tuple8(typename TupleTraits<A>::ParamType a,
         typename TupleTraits<B>::ParamType b,
         typename TupleTraits<C>::ParamType c,
         typename TupleTraits<D>::ParamType d,
         typename TupleTraits<E>::ParamType e,
         typename TupleTraits<F>::ParamType f,
         typename TupleTraits<G>::ParamType g,
         typename TupleTraits<H>::ParamType h)
      : a(a), b(b), c(c), d(d), e(e), f(f), g(g), h(h) {}

  A a;
  B b;
  C c;
  D d;
  E e;
  F f;
  G g;
  H h;
};

// Tuple types ----------------------------------------------------------------
//
// Allows for selection of ValueTuple/RefTuple/ParamTuple without needing the
// definitions of class types the tuple takes as parameters.

template <>
struct TupleTypes<Tuple0> {
  typedef Tuple0 ValueTuple;
  typedef Tuple0 RefTuple;
  typedef Tuple0 ParamTuple;
};

template <class A>
struct TupleTypes<Tuple1<A>> {
  typedef Tuple1<typename TupleTraits<A>::ValueType> ValueTuple;
  typedef Tuple1<typename TupleTraits<A>::RefType> RefTuple;
  typedef Tuple1<typename TupleTraits<A>::ParamType> ParamTuple;
};

template <class A, class B>
struct TupleTypes<Tuple2<A, B>> {
  typedef Tuple2<typename TupleTraits<A>::ValueType,
                 typename TupleTraits<B>::ValueType>
      ValueTuple;
  typedef Tuple2<typename TupleTraits<A>::RefType,
                 typename TupleTraits<B>::RefType>
      RefTuple;
  typedef Tuple2<typename TupleTraits<A>::ParamType,
                 typename TupleTraits<B>::ParamType>
      ParamTuple;
};

template <class A, class B, class C>
struct TupleTypes<Tuple3<A, B, C>> {
  typedef Tuple3<typename TupleTraits<A>::ValueType,
                 typename TupleTraits<B>::ValueType,
                 typename TupleTraits<C>::ValueType>
      ValueTuple;
  typedef Tuple3<typename TupleTraits<A>::RefType,
                 typename TupleTraits<B>::RefType,
                 typename TupleTraits<C>::RefType>
      RefTuple;
  typedef Tuple3<typename TupleTraits<A>::ParamType,
                 typename TupleTraits<B>::ParamType,
                 typename TupleTraits<C>::ParamType>
      ParamTuple;
};

template <class A, class B, class C, class D>
struct TupleTypes<Tuple4<A, B, C, D>> {
  typedef Tuple4<typename TupleTraits<A>::ValueType,
                 typename TupleTraits<B>::ValueType,
                 typename TupleTraits<C>::ValueType,
                 typename TupleTraits<D>::ValueType>
      ValueTuple;
  typedef Tuple4<typename TupleTraits<A>::RefType,
                 typename TupleTraits<B>::RefType,
                 typename TupleTraits<C>::RefType,
                 typename TupleTraits<D>::RefType>
      RefTuple;
  typedef Tuple4<typename TupleTraits<A>::ParamType,
                 typename TupleTraits<B>::ParamType,
                 typename TupleTraits<C>::ParamType,
                 typename TupleTraits<D>::ParamType>
      ParamTuple;
};

template <class A, class B, class C, class D, class E>
struct TupleTypes<Tuple5<A, B, C, D, E>> {
  typedef Tuple5<typename TupleTraits<A>::ValueType,
                 typename TupleTraits<B>::ValueType,
                 typename TupleTraits<C>::ValueType,
                 typename TupleTraits<D>::ValueType,
                 typename TupleTraits<E>::ValueType>
      ValueTuple;
  typedef Tuple5<typename TupleTraits<A>::RefType,
                 typename TupleTraits<B>::RefType,
                 typename TupleTraits<C>::RefType,
                 typename TupleTraits<D>::RefType,
                 typename TupleTraits<E>::RefType>
      RefTuple;
  typedef Tuple5<typename TupleTraits<A>::ParamType,
                 typename TupleTraits<B>::ParamType,
                 typename TupleTraits<C>::ParamType,
                 typename TupleTraits<D>::ParamType,
                 typename TupleTraits<E>::ParamType>
      ParamTuple;
};

template <class A, class B, class C, class D, class E, class F>
struct TupleTypes<Tuple6<A, B, C, D, E, F>> {
  typedef Tuple6<typename TupleTraits<A>::ValueType,
                 typename TupleTraits<B>::ValueType,
                 typename TupleTraits<C>::ValueType,
                 typename TupleTraits<D>::ValueType,
                 typename TupleTraits<E>::ValueType,
                 typename TupleTraits<F>::ValueType>
      ValueTuple;
  typedef Tuple6<typename TupleTraits<A>::RefType,
                 typename TupleTraits<B>::RefType,
                 typename TupleTraits<C>::RefType,
                 typename TupleTraits<D>::RefType,
                 typename TupleTraits<E>::RefType,
                 typename TupleTraits<F>::RefType>
      RefTuple;
  typedef Tuple6<typename TupleTraits<A>::ParamType,
                 typename TupleTraits<B>::ParamType,
                 typename TupleTraits<C>::ParamType,
                 typename TupleTraits<D>::ParamType,
                 typename TupleTraits<E>::ParamType,
                 typename TupleTraits<F>::ParamType>
      ParamTuple;
};

template <class A, class B, class C, class D, class E, class F, class G>
struct TupleTypes<Tuple7<A, B, C, D, E, F, G>> {
  typedef Tuple7<typename TupleTraits<A>::ValueType,
                 typename TupleTraits<B>::ValueType,
                 typename TupleTraits<C>::ValueType,
                 typename TupleTraits<D>::ValueType,
                 typename TupleTraits<E>::ValueType,
                 typename TupleTraits<F>::ValueType,
                 typename TupleTraits<G>::ValueType>
      ValueTuple;
  typedef Tuple7<typename TupleTraits<A>::RefType,
                 typename TupleTraits<B>::RefType,
                 typename TupleTraits<C>::RefType,
                 typename TupleTraits<D>::RefType,
                 typename TupleTraits<E>::RefType,
                 typename TupleTraits<F>::RefType,
                 typename TupleTraits<G>::RefType>
      RefTuple;
  typedef Tuple7<typename TupleTraits<A>::ParamType,
                 typename TupleTraits<B>::ParamType,
                 typename TupleTraits<C>::ParamType,
                 typename TupleTraits<D>::ParamType,
                 typename TupleTraits<E>::ParamType,
                 typename TupleTraits<F>::ParamType,
                 typename TupleTraits<G>::ParamType>
      ParamTuple;
};

template <class A,
          class B,
          class C,
          class D,
          class E,
          class F,
          class G,
          class H>
struct TupleTypes<Tuple8<A, B, C, D, E, F, G, H>> {
  typedef Tuple8<typename TupleTraits<A>::ValueType,
                 typename TupleTraits<B>::ValueType,
                 typename TupleTraits<C>::ValueType,
                 typename TupleTraits<D>::ValueType,
                 typename TupleTraits<E>::ValueType,
                 typename TupleTraits<F>::ValueType,
                 typename TupleTraits<G>::ValueType,
                 typename TupleTraits<H>::ValueType>
      ValueTuple;
  typedef Tuple8<typename TupleTraits<A>::RefType,
                 typename TupleTraits<B>::RefType,
                 typename TupleTraits<C>::RefType,
                 typename TupleTraits<D>::RefType,
                 typename TupleTraits<E>::RefType,
                 typename TupleTraits<F>::RefType,
                 typename TupleTraits<G>::RefType,
                 typename TupleTraits<H>::RefType>
      RefTuple;
  typedef Tuple8<typename TupleTraits<A>::ParamType,
                 typename TupleTraits<B>::ParamType,
                 typename TupleTraits<C>::ParamType,
                 typename TupleTraits<D>::ParamType,
                 typename TupleTraits<E>::ParamType,
                 typename TupleTraits<F>::ParamType,
                 typename TupleTraits<G>::ParamType,
                 typename TupleTraits<H>::ParamType>
      ParamTuple;
};

// Tuple creators -------------------------------------------------------------
//
// Helper functions for constructing tuples while inferring the template
// argument types.

inline Tuple0 MakeTuple() {
  return Tuple0();
}

template <class A>
inline Tuple1<A> MakeTuple(const A& a) {
  return Tuple1<A>(a);
}

template <class A, class B>
inline Tuple2<A, B> MakeTuple(const A& a, const B& b) {
  return Tuple2<A, B>(a, b);
}

template <class A, class B, class C>
inline Tuple3<A, B, C> MakeTuple(const A& a, const B& b, const C& c) {
  return Tuple3<A, B, C>(a, b, c);
}

template <class A, class B, class C, class D>
inline Tuple4<A, B, C, D> MakeTuple(const A& a,
                                    const B& b,
                                    const C& c,
                                    const D& d) {
  return Tuple4<A, B, C, D>(a, b, c, d);
}

template <class A, class B, class C, class D, class E>
inline Tuple5<A, B, C, D, E> MakeTuple(const A& a,
                                       const B& b,
                                       const C& c,
                                       const D& d,
                                       const E& e) {
  return Tuple5<A, B, C, D, E>(a, b, c, d, e);
}

template <class A, class B, class C, class D, class E, class F>
inline Tuple6<A, B, C, D, E, F> MakeTuple(const A& a,
                                          const B& b,
                                          const C& c,
                                          const D& d,
                                          const E& e,
                                          const F& f) {
  return Tuple6<A, B, C, D, E, F>(a, b, c, d, e, f);
}

template <class A, class B, class C, class D, class E, class F, class G>
inline Tuple7<A, B, C, D, E, F, G> MakeTuple(const A& a,
                                             const B& b,
                                             const C& c,
                                             const D& d,
                                             const E& e,
                                             const F& f,
                                             const G& g) {
  return Tuple7<A, B, C, D, E, F, G>(a, b, c, d, e, f, g);
}

template <class A,
          class B,
          class C,
          class D,
          class E,
          class F,
          class G,
          class H>
inline Tuple8<A, B, C, D, E, F, G, H> MakeTuple(const A& a,
                                                const B& b,
                                                const C& c,
                                                const D& d,
                                                const E& e,
                                                const F& f,
                                                const G& g,
                                                const H& h) {
  return Tuple8<A, B, C, D, E, F, G, H>(a, b, c, d, e, f, g, h);
}

// The following set of helpers make what Boost refers to as "Tiers" - a tuple
// of references.

template <class A>
inline Tuple1<A&> MakeRefTuple(A& a) {
  return Tuple1<A&>(a);
}

template <class A, class B>
inline Tuple2<A&, B&> MakeRefTuple(A& a, B& b) {
  return Tuple2<A&, B&>(a, b);
}

template <class A, class B, class C>
inline Tuple3<A&, B&, C&> MakeRefTuple(A& a, B& b, C& c) {
  return Tuple3<A&, B&, C&>(a, b, c);
}

template <class A, class B, class C, class D>
inline Tuple4<A&, B&, C&, D&> MakeRefTuple(A& a, B& b, C& c, D& d) {
  return Tuple4<A&, B&, C&, D&>(a, b, c, d);
}

template <class A, class B, class C, class D, class E>
inline Tuple5<A&, B&, C&, D&, E&> MakeRefTuple(A& a, B& b, C& c, D& d, E& e) {
  return Tuple5<A&, B&, C&, D&, E&>(a, b, c, d, e);
}

template <class A, class B, class C, class D, class E, class F>
inline Tuple6<A&, B&, C&, D&, E&, F&> MakeRefTuple(A& a,
                                                   B& b,
                                                   C& c,
                                                   D& d,
                                                   E& e,
                                                   F& f) {
  return Tuple6<A&, B&, C&, D&, E&, F&>(a, b, c, d, e, f);
}

template <class A, class B, class C, class D, class E, class F, class G>
inline Tuple7<A&, B&, C&, D&, E&, F&, G&>
MakeRefTuple(A& a, B& b, C& c, D& d, E& e, F& f, G& g) {
  return Tuple7<A&, B&, C&, D&, E&, F&, G&>(a, b, c, d, e, f, g);
}

template <class A,
          class B,
          class C,
          class D,
          class E,
          class F,
          class G,
          class H>
inline Tuple8<A&, B&, C&, D&, E&, F&, G&, H&>
MakeRefTuple(A& a, B& b, C& c, D& d, E& e, F& f, G& g, H& h) {
  return Tuple8<A&, B&, C&, D&, E&, F&, G&, H&>(a, b, c, d, e, f, g, h);
}

// Dispatchers ----------------------------------------------------------------
//
// Helper functions that call the given method on an object, with the unpacked
// tuple arguments.  Notice that they all have the same number of arguments,
// so you need only write:
//   DispatchToMethod(object, &Object::method, args);
// This is very useful for templated dispatchers, since they don't need to know
// what type |args| is.

// Non-Static Dispatchers with no out params.

template <class ObjT, class Method>
inline void DispatchToMethod(ObjT* obj, Method method, const Tuple0& arg) {
  (obj->*method)();
}

template <class ObjT, class Method, class A>
inline void DispatchToMethod(ObjT* obj, Method method, const A& arg) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg));
}

template <class ObjT, class Method, class A>
inline void DispatchToMethod(ObjT* obj, Method method, const Tuple1<A>& arg) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a));
}

template <class ObjT, class Method, class A, class B>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple2<A, B>& arg) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
                 base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b));
}

template <class ObjT, class Method, class A, class B, class C>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple3<A, B, C>& arg) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
                 base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
                 base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c));
}

template <class ObjT, class Method, class A, class B, class C, class D>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple4<A, B, C, D>& arg) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
                 base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
                 base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c),
                 base::cef_internal::UnwrapTraits<D>::Unwrap(arg.d));
}

template <class ObjT, class Method, class A, class B, class C, class D, class E>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple5<A, B, C, D, E>& arg) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
                 base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
                 base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c),
                 base::cef_internal::UnwrapTraits<D>::Unwrap(arg.d),
                 base::cef_internal::UnwrapTraits<E>::Unwrap(arg.e));
}

template <class ObjT,
          class Method,
          class A,
          class B,
          class C,
          class D,
          class E,
          class F>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple6<A, B, C, D, E, F>& arg) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
                 base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
                 base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c),
                 base::cef_internal::UnwrapTraits<D>::Unwrap(arg.d),
                 base::cef_internal::UnwrapTraits<E>::Unwrap(arg.e),
                 base::cef_internal::UnwrapTraits<F>::Unwrap(arg.f));
}

template <class ObjT,
          class Method,
          class A,
          class B,
          class C,
          class D,
          class E,
          class F,
          class G>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple7<A, B, C, D, E, F, G>& arg) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
                 base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
                 base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c),
                 base::cef_internal::UnwrapTraits<D>::Unwrap(arg.d),
                 base::cef_internal::UnwrapTraits<E>::Unwrap(arg.e),
                 base::cef_internal::UnwrapTraits<F>::Unwrap(arg.f),
                 base::cef_internal::UnwrapTraits<G>::Unwrap(arg.g));
}

template <class ObjT,
          class Method,
          class A,
          class B,
          class C,
          class D,
          class E,
          class F,
          class G,
          class H>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple8<A, B, C, D, E, F, G, H>& arg) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
                 base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
                 base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c),
                 base::cef_internal::UnwrapTraits<D>::Unwrap(arg.d),
                 base::cef_internal::UnwrapTraits<E>::Unwrap(arg.e),
                 base::cef_internal::UnwrapTraits<F>::Unwrap(arg.f),
                 base::cef_internal::UnwrapTraits<G>::Unwrap(arg.g),
                 base::cef_internal::UnwrapTraits<H>::Unwrap(arg.h));
}

// Static Dispatchers with no out params.

template <class Function>
inline void DispatchToFunction(Function function, const Tuple0& arg) {
  (*function)();
}

template <class Function, class A>
inline void DispatchToFunction(Function function, const A& arg) {
  (*function)(arg);
}

template <class Function, class A>
inline void DispatchToFunction(Function function, const Tuple1<A>& arg) {
  (*function)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a));
}

template <class Function, class A, class B>
inline void DispatchToFunction(Function function, const Tuple2<A, B>& arg) {
  (*function)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
              base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b));
}

template <class Function, class A, class B, class C>
inline void DispatchToFunction(Function function, const Tuple3<A, B, C>& arg) {
  (*function)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
              base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
              base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c));
}

template <class Function, class A, class B, class C, class D>
inline void DispatchToFunction(Function function,
                               const Tuple4<A, B, C, D>& arg) {
  (*function)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
              base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
              base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c),
              base::cef_internal::UnwrapTraits<D>::Unwrap(arg.d));
}

template <class Function, class A, class B, class C, class D, class E>
inline void DispatchToFunction(Function function,
                               const Tuple5<A, B, C, D, E>& arg) {
  (*function)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
              base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
              base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c),
              base::cef_internal::UnwrapTraits<D>::Unwrap(arg.d),
              base::cef_internal::UnwrapTraits<E>::Unwrap(arg.e));
}

template <class Function, class A, class B, class C, class D, class E, class F>
inline void DispatchToFunction(Function function,
                               const Tuple6<A, B, C, D, E, F>& arg) {
  (*function)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
              base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
              base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c),
              base::cef_internal::UnwrapTraits<D>::Unwrap(arg.d),
              base::cef_internal::UnwrapTraits<E>::Unwrap(arg.e),
              base::cef_internal::UnwrapTraits<F>::Unwrap(arg.f));
}

template <class Function,
          class A,
          class B,
          class C,
          class D,
          class E,
          class F,
          class G>
inline void DispatchToFunction(Function function,
                               const Tuple7<A, B, C, D, E, F, G>& arg) {
  (*function)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
              base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
              base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c),
              base::cef_internal::UnwrapTraits<D>::Unwrap(arg.d),
              base::cef_internal::UnwrapTraits<E>::Unwrap(arg.e),
              base::cef_internal::UnwrapTraits<F>::Unwrap(arg.f),
              base::cef_internal::UnwrapTraits<G>::Unwrap(arg.g));
}

template <class Function,
          class A,
          class B,
          class C,
          class D,
          class E,
          class F,
          class G,
          class H>
inline void DispatchToFunction(Function function,
                               const Tuple8<A, B, C, D, E, F, G, H>& arg) {
  (*function)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
              base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
              base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c),
              base::cef_internal::UnwrapTraits<D>::Unwrap(arg.d),
              base::cef_internal::UnwrapTraits<E>::Unwrap(arg.e),
              base::cef_internal::UnwrapTraits<F>::Unwrap(arg.f),
              base::cef_internal::UnwrapTraits<G>::Unwrap(arg.g),
              base::cef_internal::UnwrapTraits<H>::Unwrap(arg.h));
}

// Dispatchers with 0 out param (as a Tuple0).

template <class ObjT, class Method>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple0& arg,
                             Tuple0*) {
  (obj->*method)();
}

template <class ObjT, class Method, class A>
inline void DispatchToMethod(ObjT* obj, Method method, const A& arg, Tuple0*) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg));
}

template <class ObjT, class Method, class A>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple1<A>& arg,
                             Tuple0*) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a));
}

template <class ObjT, class Method, class A, class B>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple2<A, B>& arg,
                             Tuple0*) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
                 base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b));
}

template <class ObjT, class Method, class A, class B, class C>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple3<A, B, C>& arg,
                             Tuple0*) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
                 base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
                 base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c));
}

template <class ObjT, class Method, class A, class B, class C, class D>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple4<A, B, C, D>& arg,
                             Tuple0*) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
                 base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
                 base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c),
                 base::cef_internal::UnwrapTraits<D>::Unwrap(arg.d));
}

template <class ObjT, class Method, class A, class B, class C, class D, class E>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple5<A, B, C, D, E>& arg,
                             Tuple0*) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
                 base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
                 base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c),
                 base::cef_internal::UnwrapTraits<D>::Unwrap(arg.d),
                 base::cef_internal::UnwrapTraits<E>::Unwrap(arg.e));
}

template <class ObjT,
          class Method,
          class A,
          class B,
          class C,
          class D,
          class E,
          class F>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple6<A, B, C, D, E, F>& arg,
                             Tuple0*) {
  (obj->*method)(base::cef_internal::UnwrapTraits<A>::Unwrap(arg.a),
                 base::cef_internal::UnwrapTraits<B>::Unwrap(arg.b),
                 base::cef_internal::UnwrapTraits<C>::Unwrap(arg.c),
                 base::cef_internal::UnwrapTraits<D>::Unwrap(arg.d),
                 base::cef_internal::UnwrapTraits<E>::Unwrap(arg.e),
                 base::cef_internal::UnwrapTraits<F>::Unwrap(arg.f));
}

// Dispatchers with 1 out param.

template <class ObjT, class Method, class OutA>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple0& in,
                             Tuple1<OutA>* out) {
  (obj->*method)(&out->a);
}

template <class ObjT, class Method, class InA, class OutA>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const InA& in,
                             Tuple1<OutA>* out) {
  (obj->*method)(in, &out->a);
}

template <class ObjT, class Method, class InA, class OutA>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple1<InA>& in,
                             Tuple1<OutA>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a), &out->a);
}

template <class ObjT, class Method, class InA, class InB, class OutA>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple2<InA, InB>& in,
                             Tuple1<OutA>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b), &out->a);
}

template <class ObjT, class Method, class InA, class InB, class InC, class OutA>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple3<InA, InB, InC>& in,
                             Tuple1<OutA>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c), &out->a);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class OutA>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple4<InA, InB, InC, InD>& in,
                             Tuple1<OutA>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d), &out->a);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class InE,
          class OutA>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple5<InA, InB, InC, InD, InE>& in,
                             Tuple1<OutA>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d),
                 base::cef_internal::UnwrapTraits<InE>::Unwrap(in.e), &out->a);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class InE,
          class InF,
          class OutA>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple6<InA, InB, InC, InD, InE, InF>& in,
                             Tuple1<OutA>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d),
                 base::cef_internal::UnwrapTraits<InE>::Unwrap(in.e),
                 base::cef_internal::UnwrapTraits<InF>::Unwrap(in.f), &out->a);
}

// Dispatchers with 2 out params.

template <class ObjT, class Method, class OutA, class OutB>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple0& in,
                             Tuple2<OutA, OutB>* out) {
  (obj->*method)(&out->a, &out->b);
}

template <class ObjT, class Method, class InA, class OutA, class OutB>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const InA& in,
                             Tuple2<OutA, OutB>* out) {
  (obj->*method)(in, &out->a, &out->b);
}

template <class ObjT, class Method, class InA, class OutA, class OutB>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple1<InA>& in,
                             Tuple2<OutA, OutB>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a), &out->a,
                 &out->b);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class OutA,
          class OutB>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple2<InA, InB>& in,
                             Tuple2<OutA, OutB>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b), &out->a,
                 &out->b);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class OutA,
          class OutB>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple3<InA, InB, InC>& in,
                             Tuple2<OutA, OutB>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c), &out->a,
                 &out->b);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class OutA,
          class OutB>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple4<InA, InB, InC, InD>& in,
                             Tuple2<OutA, OutB>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d), &out->a,
                 &out->b);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class InE,
          class OutA,
          class OutB>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple5<InA, InB, InC, InD, InE>& in,
                             Tuple2<OutA, OutB>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d),
                 base::cef_internal::UnwrapTraits<InE>::Unwrap(in.e), &out->a,
                 &out->b);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class InE,
          class InF,
          class OutA,
          class OutB>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple6<InA, InB, InC, InD, InE, InF>& in,
                             Tuple2<OutA, OutB>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d),
                 base::cef_internal::UnwrapTraits<InE>::Unwrap(in.e),
                 base::cef_internal::UnwrapTraits<InF>::Unwrap(in.f), &out->a,
                 &out->b);
}

// Dispatchers with 3 out params.

template <class ObjT, class Method, class OutA, class OutB, class OutC>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple0& in,
                             Tuple3<OutA, OutB, OutC>* out) {
  (obj->*method)(&out->a, &out->b, &out->c);
}

template <class ObjT,
          class Method,
          class InA,
          class OutA,
          class OutB,
          class OutC>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const InA& in,
                             Tuple3<OutA, OutB, OutC>* out) {
  (obj->*method)(in, &out->a, &out->b, &out->c);
}

template <class ObjT,
          class Method,
          class InA,
          class OutA,
          class OutB,
          class OutC>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple1<InA>& in,
                             Tuple3<OutA, OutB, OutC>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a), &out->a,
                 &out->b, &out->c);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class OutA,
          class OutB,
          class OutC>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple2<InA, InB>& in,
                             Tuple3<OutA, OutB, OutC>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b), &out->a,
                 &out->b, &out->c);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class OutA,
          class OutB,
          class OutC>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple3<InA, InB, InC>& in,
                             Tuple3<OutA, OutB, OutC>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c), &out->a,
                 &out->b, &out->c);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class OutA,
          class OutB,
          class OutC>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple4<InA, InB, InC, InD>& in,
                             Tuple3<OutA, OutB, OutC>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d), &out->a,
                 &out->b, &out->c);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class InE,
          class OutA,
          class OutB,
          class OutC>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple5<InA, InB, InC, InD, InE>& in,
                             Tuple3<OutA, OutB, OutC>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d),
                 base::cef_internal::UnwrapTraits<InE>::Unwrap(in.e), &out->a,
                 &out->b, &out->c);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class InE,
          class InF,
          class OutA,
          class OutB,
          class OutC>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple6<InA, InB, InC, InD, InE, InF>& in,
                             Tuple3<OutA, OutB, OutC>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d),
                 base::cef_internal::UnwrapTraits<InE>::Unwrap(in.e),
                 base::cef_internal::UnwrapTraits<InF>::Unwrap(in.f), &out->a,
                 &out->b, &out->c);
}

// Dispatchers with 4 out params.

template <class ObjT,
          class Method,
          class OutA,
          class OutB,
          class OutC,
          class OutD>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple0& in,
                             Tuple4<OutA, OutB, OutC, OutD>* out) {
  (obj->*method)(&out->a, &out->b, &out->c, &out->d);
}

template <class ObjT,
          class Method,
          class InA,
          class OutA,
          class OutB,
          class OutC,
          class OutD>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const InA& in,
                             Tuple4<OutA, OutB, OutC, OutD>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in), &out->a,
                 &out->b, &out->c, &out->d);
}

template <class ObjT,
          class Method,
          class InA,
          class OutA,
          class OutB,
          class OutC,
          class OutD>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple1<InA>& in,
                             Tuple4<OutA, OutB, OutC, OutD>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a), &out->a,
                 &out->b, &out->c, &out->d);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class OutA,
          class OutB,
          class OutC,
          class OutD>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple2<InA, InB>& in,
                             Tuple4<OutA, OutB, OutC, OutD>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b), &out->a,
                 &out->b, &out->c, &out->d);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class OutA,
          class OutB,
          class OutC,
          class OutD>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple3<InA, InB, InC>& in,
                             Tuple4<OutA, OutB, OutC, OutD>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c), &out->a,
                 &out->b, &out->c, &out->d);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class OutA,
          class OutB,
          class OutC,
          class OutD>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple4<InA, InB, InC, InD>& in,
                             Tuple4<OutA, OutB, OutC, OutD>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d), &out->a,
                 &out->b, &out->c, &out->d);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class InE,
          class OutA,
          class OutB,
          class OutC,
          class OutD>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple5<InA, InB, InC, InD, InE>& in,
                             Tuple4<OutA, OutB, OutC, OutD>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d),
                 base::cef_internal::UnwrapTraits<InE>::Unwrap(in.e), &out->a,
                 &out->b, &out->c, &out->d);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class InE,
          class InF,
          class OutA,
          class OutB,
          class OutC,
          class OutD>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple6<InA, InB, InC, InD, InE, InF>& in,
                             Tuple4<OutA, OutB, OutC, OutD>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d),
                 base::cef_internal::UnwrapTraits<InE>::Unwrap(in.e),
                 base::cef_internal::UnwrapTraits<InF>::Unwrap(in.f), &out->a,
                 &out->b, &out->c, &out->d);
}

// Dispatchers with 5 out params.

template <class ObjT,
          class Method,
          class OutA,
          class OutB,
          class OutC,
          class OutD,
          class OutE>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple0& in,
                             Tuple5<OutA, OutB, OutC, OutD, OutE>* out) {
  (obj->*method)(&out->a, &out->b, &out->c, &out->d, &out->e);
}

template <class ObjT,
          class Method,
          class InA,
          class OutA,
          class OutB,
          class OutC,
          class OutD,
          class OutE>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const InA& in,
                             Tuple5<OutA, OutB, OutC, OutD, OutE>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in), &out->a,
                 &out->b, &out->c, &out->d, &out->e);
}

template <class ObjT,
          class Method,
          class InA,
          class OutA,
          class OutB,
          class OutC,
          class OutD,
          class OutE>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple1<InA>& in,
                             Tuple5<OutA, OutB, OutC, OutD, OutE>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a), &out->a,
                 &out->b, &out->c, &out->d, &out->e);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class OutA,
          class OutB,
          class OutC,
          class OutD,
          class OutE>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple2<InA, InB>& in,
                             Tuple5<OutA, OutB, OutC, OutD, OutE>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b), &out->a,
                 &out->b, &out->c, &out->d, &out->e);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class OutA,
          class OutB,
          class OutC,
          class OutD,
          class OutE>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple3<InA, InB, InC>& in,
                             Tuple5<OutA, OutB, OutC, OutD, OutE>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c), &out->a,
                 &out->b, &out->c, &out->d, &out->e);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class OutA,
          class OutB,
          class OutC,
          class OutD,
          class OutE>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple4<InA, InB, InC, InD>& in,
                             Tuple5<OutA, OutB, OutC, OutD, OutE>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d), &out->a,
                 &out->b, &out->c, &out->d, &out->e);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class InE,
          class OutA,
          class OutB,
          class OutC,
          class OutD,
          class OutE>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple5<InA, InB, InC, InD, InE>& in,
                             Tuple5<OutA, OutB, OutC, OutD, OutE>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d),
                 base::cef_internal::UnwrapTraits<InE>::Unwrap(in.e), &out->a,
                 &out->b, &out->c, &out->d, &out->e);
}

template <class ObjT,
          class Method,
          class InA,
          class InB,
          class InC,
          class InD,
          class InE,
          class InF,
          class OutA,
          class OutB,
          class OutC,
          class OutD,
          class OutE>
inline void DispatchToMethod(ObjT* obj,
                             Method method,
                             const Tuple6<InA, InB, InC, InD, InE, InF>& in,
                             Tuple5<OutA, OutB, OutC, OutD, OutE>* out) {
  (obj->*method)(base::cef_internal::UnwrapTraits<InA>::Unwrap(in.a),
                 base::cef_internal::UnwrapTraits<InB>::Unwrap(in.b),
                 base::cef_internal::UnwrapTraits<InC>::Unwrap(in.c),
                 base::cef_internal::UnwrapTraits<InD>::Unwrap(in.d),
                 base::cef_internal::UnwrapTraits<InE>::Unwrap(in.e),
                 base::cef_internal::UnwrapTraits<InF>::Unwrap(in.f), &out->a,
                 &out->b, &out->c, &out->d, &out->e);
}

}  // namespace base

#endif  // !USING_CHROMIUM_INCLUDES

#endif  // CEF_INCLUDE_BASE_CEF_TUPLE_H_