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/find_handler_ctocpp.h

@@ -28,11 +28,9 @@ class CefFindHandlerCToCpp
     : public CefCToCpp<CefFindHandlerCToCpp, CefFindHandler,
         cef_find_handler_t> {
  public:
-  explicit CefFindHandlerCToCpp(cef_find_handler_t* str)
-      : CefCToCpp<CefFindHandlerCToCpp, CefFindHandler, cef_find_handler_t>(
-          str) {}
+  CefFindHandlerCToCpp();
 
-  // CefFindHandler methods
+  // CefFindHandler methods.
   void OnFindResult(CefRefPtr<CefBrowser> browser, int identifier, int count,
       const CefRect& selectionRect, int activeMatchOrdinal,
       bool finalUpdate) override;
@@ -40,4 +38,3 @@ class CefFindHandlerCToCpp
 
 #endif  // BUILDING_CEF_SHARED
 #endif  // CEF_LIBCEF_DLL_CTOCPP_FIND_HANDLER_CTOCPP_H_
-