Extensions: pass ChromeV8Context around instead of v8::Handle.

chrome/renderer/extensions/api_definitions_natives.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_API_DEFINITIONS_NATIVES_H_
 #define CHROME_RENDERER_EXTENSIONS_API_DEFINITIONS_NATIVES_H_
 
 #include "chrome/renderer/extensions/chrome_v8_extension.h"
 #include "chrome/renderer/extensions/dispatcher.h"
 
 #include "v8/include/v8.h"
 
 class ChromeV8Context;
 
 namespace extensions {
 
 // Native functions for JS to get access to the schemas for extension APIs.
 class ApiDefinitionsNatives : public ChromeV8Extension {
  public:
   ApiDefinitionsNatives(Dispatcher* dispatcher, ChromeV8Context* context);
 
  private:
   // Returns the list of all schemas that are available to the calling context.
   v8::Handle<v8::Value> GetExtensionAPIDefinitions(const v8::Arguments& args);
-
-  ChromeV8Context* context_;
-
   DISALLOW_COPY_AND_ASSIGN(ApiDefinitionsNatives);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_API_DEFINITIONS_NATIVES_H_