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

chrome/renderer/extensions/send_request_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_SEND_REQUEST_NATIVES_H_
 #define CHROME_RENDERER_EXTENSIONS_SEND_REQUEST_NATIVES_H_
 
 #include "chrome/renderer/extensions/chrome_v8_extension.h"
 #include "chrome/renderer/extensions/dispatcher.h"
 
@@ skipping 16 matching lines @@
 
   // Starts an API request to the browser, with an optional callback.  The
   // callback will be dispatched to EventBindings::HandleResponse.
   v8::Handle<v8::Value> StartRequest(const v8::Arguments& args);
 
   // Gets a reference to an object's global object.
   v8::Handle<v8::Value> GetGlobal(const v8::Arguments& args);
 
   RequestSender* request_sender_;
 
-  ChromeV8Context* context_;
-
   DISALLOW_COPY_AND_ASSIGN(SendRequestNatives);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_SEND_REQUEST_NATIVES_H_