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

chrome/renderer/extensions/set_icon_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_SET_ICON_NATIVES_H_
 #define CHROME_RENDERER_EXTENSIONS_SET_ICON_NATIVES_H_
 
 #include "chrome/renderer/extensions/chrome_v8_extension.h"
 #include "chrome/renderer/extensions/dispatcher.h"
 
@@ skipping 15 matching lines @@
 
  private:
   bool ConvertImageDataToBitmapValue(const v8::Local<v8::Object> image_data,
                                      Value** bitmap_value);
   bool ConvertImageDataSetToBitmapValueSet(const v8::Arguments& args,
                                            DictionaryValue* bitmap_value);
   v8::Handle<v8::Value> SetIconCommon(const v8::Arguments& args);
 
   RequestSender* request_sender_;
 
-  ChromeV8Context* context_;
-
   DISALLOW_COPY_AND_ASSIGN(SetIconNatives);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_SET_ICON_NATIVES_H_