Introduce the use of Chromium types (issue #1336).

Changes to the CEF public API:
- Add base::Bind, base::Callback, base::Lock, base::WeakPtr, scoped_refptr, scoped_ptr and supporting types.
- Add include/wrapper/cef_closure_task.h helpers for converting a base::Closure to a CefTask.
- Change CefRefPtr to extend scoped_refptr.
-- Change CefBase method signatures to match RefCountedThreadSafeBase.
- Change IMPLEMENT_REFCOUNTING to use base::AtomicRefCount*.
-- Remove the CefAtomic* functions.
-- IMPLEMENT_REFCOUNTING now enforces via a compile-time error that the correct class name was passed to the macro.
- Change IMPLEMENT_LOCKING to use base::Lock.
-- Remove the CefCriticalSection class.
-- Deprecate the IMPLEMENT_LOCKING macro.
-- base::Lock will DCHECK() in Debug builds if lock usage is reentrant.
- Move include/internal/cef_tuple.h to include/base/cef_tuple.h.
- Allow an empty |callback| parameter passed to CefBeginTracing.

Changes to the CEF implementation:
- Fix incorrect names passed to the IMPLEMENT_REFCOUNTING macro.
- Fix instances of reentrant locking in the CefXmlObject and CefRequest implementations.
- Remove use of the IMPLEMENT_LOCKING macro.

Changes to cef_unittests:
- Add tests/unittests/chromium_includes.h and always include it first from unit test .cc files to avoid name conflicts with Chromium types.
- Fix wrong header include ordering.
- Remove use of the IMPLEMENT_LOCKING macro.

Changes to cefclient and cefsimple:
- Use base::Bind and cef_closure_task.h instead of NewCefRunnable*.
- Remove use of the IMPEMENT_LOCKING macro.
- Fix incorrect/unnecessary locking.
- Add additional runtime thread checks.
- Windows: Perform actions on the UI thread instead of the main thread when running in multi-threaded-message-loop mode to avoid excessive locking.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1769 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

include/internal/cef_ptr.h

@@ -1,5 +1,4 @@
-// Copyright (c) 2008 Marshall A. Greenblatt. Portions Copyright (c)
-// 2006-2008 Google Inc. All rights reserved.
+// Copyright (c) 2014 Marshall A. Greenblatt. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
@@ -33,10 +32,11 @@
 #define CEF_INCLUDE_INTERNAL_CEF_PTR_H_
 #pragma once
 
-#include <stddef.h>
+#include "include/base/cef_ref_counted.h"
 
 ///
-// Smart pointer implementation borrowed from base/ref_counted.h
+// Smart pointer implementation that is an alias of scoped_refptr from
+// include/base/cef_ref_counted.h.
 // <p>
 // A smart pointer class for reference counted objects.  Use this class instead
 // of calling AddRef and Release manually on a reference counted object to
@@ -144,56 +144,18 @@
 // </p>
 ///
 template <class T>
-class CefRefPtr {
+class CefRefPtr : public scoped_refptr<T> {
  public:
-  CefRefPtr() : ptr_(NULL) {
-  }
+  typedef scoped_refptr<T> parent;
 
-  CefRefPtr(T* p) : ptr_(p) {  // NOLINT(runtime/explicit)
-    if (ptr_)
-      ptr_->AddRef();
-  }
+  CefRefPtr() : parent() {}
 
-  CefRefPtr(const CefRefPtr<T>& r) : ptr_(r.ptr_) {
-    if (ptr_)
-      ptr_->AddRef();
-  }
+  CefRefPtr(T* p) : parent(p) {}
 
-  ~CefRefPtr() {
-    if (ptr_)
-      ptr_->Release();
-  }
+  CefRefPtr(const scoped_refptr<T>& r) : parent(r) {}
 
-  T* get() const { return ptr_; }
-  operator T*() const { return ptr_; }
-  T* operator->() const { return ptr_; }
-
-  CefRefPtr<T>& operator=(T* p) {
-    // AddRef first so that self assignment should work
-    if (p)
-      p->AddRef();
-    if (ptr_ )
-      ptr_ ->Release();
-    ptr_ = p;
-    return *this;
-  }
-
-  CefRefPtr<T>& operator=(const CefRefPtr<T>& r) {
-    return *this = r.ptr_;
-  }
-
-  void swap(T** pp) {
-    T* p = ptr_;
-    ptr_ = *pp;
-    *pp = p;
-  }
-
-  void swap(CefRefPtr<T>& r) {
-    swap(&r.ptr_);  // NOLINT(build/include_what_you_use)
-  }
-
- private:
-  T* ptr_;
+  template <typename U>
+  CefRefPtr(const scoped_refptr<U>& r) : parent(r) {}
 };
 
 #endif  // CEF_INCLUDE_INTERNAL_CEF_PTR_H_