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

chrome/renderer/extensions/app_runtime_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_APP_RUNTIME_CUSTOM_BINDINGS_H_
 #define CHROME_RENDERER_EXTENSIONS_APP_RUNTIME_CUSTOM_BINDINGS_H_
 
 #include "chrome/renderer/extensions/chrome_v8_extension.h"
 
 namespace extensions {
 
 // The native component of custom bindings for the chrome.app.runtime API.
 class AppRuntimeCustomBindings : public ChromeV8Extension {
  public:
   AppRuntimeCustomBindings(Dispatcher* dispatcher,
-                           v8::Handle<v8::Context> context);
+                           ChromeV8Context* context);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AppRuntimeCustomBindings);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_APP_RUNTIME_CUSTOM_BINDINGS_H_