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/cpptoc/dialog_handler_cpptoc.cc

@@ -16,6 +16,8 @@
 #include "libcef_dll/transfer_util.h"
 
 
+namespace {
+
 // MEMBER FUNCTIONS - Body may be edited by hand.
 
 int CEF_CALLBACK dialog_handler_on_file_dialog(
@@ -60,13 +62,20 @@ int CEF_CALLBACK dialog_handler_on_file_dialog(
   return _retval;
 }
 
+}  // namespace
+
 
 // CONSTRUCTOR - Do not edit by hand.
 
-CefDialogHandlerCppToC::CefDialogHandlerCppToC(CefDialogHandler* cls)
-    : CefCppToC<CefDialogHandlerCppToC, CefDialogHandler, cef_dialog_handler_t>(
-        cls) {
-  struct_.struct_.on_file_dialog = dialog_handler_on_file_dialog;
+CefDialogHandlerCppToC::CefDialogHandlerCppToC() {
+  GetStruct()->on_file_dialog = dialog_handler_on_file_dialog;
+}
+
+template<> CefRefPtr<CefDialogHandler> CefCppToC<CefDialogHandlerCppToC,
+    CefDialogHandler, cef_dialog_handler_t>::UnwrapDerived(CefWrapperType type,
+    cef_dialog_handler_t* s) {
+  NOTREACHED() << "Unexpected class type: " << type;
+  return NULL;
 }
 
 #ifndef NDEBUG
@@ -74,3 +83,5 @@ template<> base::AtomicRefCount CefCppToC<CefDialogHandlerCppToC,
     CefDialogHandler, cef_dialog_handler_t>::DebugObjCt = 0;
 #endif
 
+template<> CefWrapperType CefCppToC<CefDialogHandlerCppToC, CefDialogHandler,
+    cef_dialog_handler_t>::kWrapperType = WT_DIALOG_HANDLER;