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.

tools/make_cmake.py

@@ -36,6 +36,9 @@ def get_files_for_variable(cmake_path, variables, variable):
         if path[0] == '<':
             # Skip gyp include variables
             continue
+        if path.find('/test/') >= 0:
+            # Skip test files
+            continue
 
         abspath = os.path.join(cef_dir, path)
         newpath = normalize_path(os.path.relpath(abspath, cmake_dirname))