Introduce chrome.shell.createWindow stub API for app_shell

chrome/renderer/extensions/chrome_extensions_renderer_client.h

 // Copyright 2014 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_CHROME_EXTENSIONS_RENDERER_CLIENT_H_
 #define CHROME_RENDERER_EXTENSIONS_CHROME_EXTENSIONS_RENDERER_CLIENT_H_
 
 #include "base/macros.h"
 #include "extensions/renderer/extensions_renderer_client.h"
 
 class ChromeExtensionsRendererClient
     : public extensions::ExtensionsRendererClient {
  public:
   ChromeExtensionsRendererClient();
   virtual ~ChromeExtensionsRendererClient();
 
   // Get the LazyInstance for ChromeExtensionsRendererClient.
   static ChromeExtensionsRendererClient* GetInstance();
 
   // extensions::ExtensionsRendererClient implementation.
   virtual bool IsIncognitoProcess() const OVERRIDE;
   virtual int GetLowestIsolatedWorldId() const OVERRIDE;
+  virtual void RegisterNativeHandlers(
+      extensions::ModuleSystem* module_system,
+      extensions::ScriptContext* context) OVERRIDE;
+  virtual void PopulateSourceMap(ResourceBundleSourceMap* source_map) OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ChromeExtensionsRendererClient);
 };
 
 #endif  // CHROME_RENDERER_EXTENSIONS_CHROME_EXTENSIONS_RENDERER_CLIENT_H_