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/find_handler_cpptoc.cc

@@ -14,6 +14,8 @@
 #include "libcef_dll/ctocpp/browser_ctocpp.h"
 
 
+namespace {
+
 // MEMBER FUNCTIONS - Body may be edited by hand.
 
 void CEF_CALLBACK find_handler_on_find_result(struct _cef_find_handler_t* self,
@@ -47,12 +49,20 @@ void CEF_CALLBACK find_handler_on_find_result(struct _cef_find_handler_t* self,
       finalUpdate?true:false);
 }
 
+}  // namespace
+
 
 // CONSTRUCTOR - Do not edit by hand.
 
-CefFindHandlerCppToC::CefFindHandlerCppToC(CefFindHandler* cls)
-    : CefCppToC<CefFindHandlerCppToC, CefFindHandler, cef_find_handler_t>(cls) {
-  struct_.struct_.on_find_result = find_handler_on_find_result;
+CefFindHandlerCppToC::CefFindHandlerCppToC() {
+  GetStruct()->on_find_result = find_handler_on_find_result;
+}
+
+template<> CefRefPtr<CefFindHandler> CefCppToC<CefFindHandlerCppToC,
+    CefFindHandler, cef_find_handler_t>::UnwrapDerived(CefWrapperType type,
+    cef_find_handler_t* s) {
+  NOTREACHED() << "Unexpected class type: " << type;
+  return NULL;
 }
 
 #ifndef NDEBUG
@@ -60,3 +70,5 @@ template<> base::AtomicRefCount CefCppToC<CefFindHandlerCppToC, CefFindHandler,
     cef_find_handler_t>::DebugObjCt = 0;
 #endif
 
+template<> CefWrapperType CefCppToC<CefFindHandlerCppToC, CefFindHandler,
+    cef_find_handler_t>::kWrapperType = WT_FIND_HANDLER;