Introduce chrome.shell.createWindow stub API for app_shell

apps/shell/renderer/shell_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 APPS_SHELL_RENDERER_SHELL_EXTENSIONS_RENDERER_CLIENT_H_
 #define APPS_SHELL_RENDERER_SHELL_EXTENSIONS_RENDERER_CLIENT_H_
 
 #include "base/macros.h"
 #include "extensions/renderer/extensions_renderer_client.h"
 
 namespace apps {
 
 class ShellExtensionsRendererClient
     : public extensions::ExtensionsRendererClient {
  public:
   ShellExtensionsRendererClient();
   virtual ~ShellExtensionsRendererClient();
 
   // 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(ShellExtensionsRendererClient);
 };
 
 }  // namespace apps
 
 #endif  // APPS_SHELL_RENDERER_SHELL_EXTENSIONS_RENDERER_CLIENT_H_