Improve inheritance support in the CEF API (issue #1623).

- Support single parent inheritance in CEF API classes.
- Support non-virtual inheritance in CEF API classes.
- Support translation of CEF API sub-directories.
- Add test sub-directories for testing-only functionality that will be
  available to unit tests but not exposed via the binary distribution.
- Add unit tests for the translator tool.
- Fix parsing of template parameter types that include commas.

libcef_dll/ctocpp/auth_callback_ctocpp.cc

@@ -17,7 +17,8 @@
 
 void CefAuthCallbackCToCpp::Continue(const CefString& username,
     const CefString& password) {
-  if (CEF_MEMBER_MISSING(struct_, cont))
+  cef_auth_callback_t* _struct = GetStruct();
+  if (CEF_MEMBER_MISSING(_struct, cont))
     return;
 
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
@@ -32,24 +33,39 @@ void CefAuthCallbackCToCpp::Continue(const CefString& username,
     return;
 
   // Execute
-  struct_->cont(struct_,
+  _struct->cont(_struct,
       username.GetStruct(),
       password.GetStruct());
 }
 
 void CefAuthCallbackCToCpp::Cancel() {
-  if (CEF_MEMBER_MISSING(struct_, cancel))
+  cef_auth_callback_t* _struct = GetStruct();
+  if (CEF_MEMBER_MISSING(_struct, cancel))
     return;
 
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
 
   // Execute
-  struct_->cancel(struct_);
+  _struct->cancel(_struct);
 }
 
 
+// CONSTRUCTOR - Do not edit by hand.
+
+CefAuthCallbackCToCpp::CefAuthCallbackCToCpp() {
+}
+
+template<> cef_auth_callback_t* CefCToCpp<CefAuthCallbackCToCpp,
+    CefAuthCallback, cef_auth_callback_t>::UnwrapDerived(CefWrapperType type,
+    CefAuthCallback* c) {
+  NOTREACHED() << "Unexpected class type: " << type;
+  return NULL;
+}
+
 #ifndef NDEBUG
 template<> base::AtomicRefCount CefCToCpp<CefAuthCallbackCToCpp,
     CefAuthCallback, cef_auth_callback_t>::DebugObjCt = 0;
 #endif
 
+template<> CefWrapperType CefCToCpp<CefAuthCallbackCToCpp, CefAuthCallback,
+    cef_auth_callback_t>::kWrapperType = WT_AUTH_CALLBACK;