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/test/translator_test_handler_ctocpp.cc

@@ -0,0 +1,58 @@
+// Copyright (c) 2015 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+//
+// ---------------------------------------------------------------------------
+//
+// This file was generated by the CEF translator tool. If making changes by
+// hand only do so within the body of existing method and function
+// implementations. See the translator.README.txt file in the tools directory
+// for more information.
+//
+
+#include "libcef_dll/ctocpp/test/translator_test_handler_ctocpp.h"
+#include "libcef_dll/ctocpp/test/translator_test_handler_child_ctocpp.h"
+
+
+// VIRTUAL METHODS - Body may be edited by hand.
+
+int CefTranslatorTestHandlerCToCpp::GetValue() {
+  cef_translator_test_handler_t* _struct = GetStruct();
+  if (CEF_MEMBER_MISSING(_struct, get_value))
+    return 0;
+
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  // Execute
+  int _retval = _struct->get_value(_struct);
+
+  // Return type: simple
+  return _retval;
+}
+
+
+// CONSTRUCTOR - Do not edit by hand.
+
+CefTranslatorTestHandlerCToCpp::CefTranslatorTestHandlerCToCpp() {
+}
+
+template<> cef_translator_test_handler_t* CefCToCpp<CefTranslatorTestHandlerCToCpp,
+    CefTranslatorTestHandler, cef_translator_test_handler_t>::UnwrapDerived(
+    CefWrapperType type, CefTranslatorTestHandler* c) {
+  if (type == WT_TRANSLATOR_TEST_HANDLER_CHILD) {
+    return reinterpret_cast<cef_translator_test_handler_t*>(
+        CefTranslatorTestHandlerChildCToCpp::Unwrap(
+        reinterpret_cast<CefTranslatorTestHandlerChild*>(c)));
+  }
+  NOTREACHED() << "Unexpected class type: " << type;
+  return NULL;
+}
+
+#ifndef NDEBUG
+template<> base::AtomicRefCount CefCToCpp<CefTranslatorTestHandlerCToCpp,
+    CefTranslatorTestHandler, cef_translator_test_handler_t>::DebugObjCt = 0;
+#endif
+
+template<> CefWrapperType CefCToCpp<CefTranslatorTestHandlerCToCpp,
+    CefTranslatorTestHandler, cef_translator_test_handler_t>::kWrapperType =
+    WT_TRANSLATOR_TEST_HANDLER;