Implement a module system for the extension bindings JS.

chrome/renderer/extensions/tts_custom_bindings.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_RENDERER_EXTENSIONS_TTS_CUSTOM_BINDINGS_H_
 #define CHROME_RENDERER_EXTENSIONS_TTS_CUSTOM_BINDINGS_H_
 #pragma once
 
 #include "chrome/renderer/extensions/chrome_v8_extension.h"
 
 namespace extensions {
 
 // Implements custom bindings for the tts API.
 class TTSCustomBindings : public ChromeV8Extension {
  public:
-  TTSCustomBindings(int dependency_count, const char** dependencies);
+  TTSCustomBindings();
 
-  virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
-      v8::Handle<v8::String> name) OVERRIDE;
+ private:
+  static v8::Handle<v8::Value> GetNextTTSEventId(const v8::Arguments& args);
 };
 
 }  // extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_TTS_CUSTOM_BINDINGS_H_