Remove single-window-metro-mode code paths for the app launcher and apps.

apps/shell/browser/shell_apps_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_BROWSER_SHELL_APPS_CLIENT_H_
 #define APPS_SHELL_BROWSER_SHELL_APPS_CLIENT_H_
 
 #include "apps/apps_client.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 
 namespace content {
 class BrowserContext;
 }
 
 namespace apps {
 
 // The implementation of AppsClient for app_shell.
 class ShellAppsClient : public AppsClient {
  public:
   // For app_shell only a single browser context is supported.
   explicit ShellAppsClient(content::BrowserContext* browser_context);
   virtual ~ShellAppsClient();
 
  private:
   // apps::AppsClient implementation:
   virtual std::vector<content::BrowserContext*> GetLoadedBrowserContexts()
       OVERRIDE;
-  virtual bool CheckAppLaunch(content::BrowserContext* context,
-                              const extensions::Extension* extension) OVERRIDE;
   virtual AppWindow* CreateAppWindow(content::BrowserContext* context,
                                      const extensions::Extension* extension)
       OVERRIDE;
   virtual void IncrementKeepAliveCount() OVERRIDE;
   virtual void DecrementKeepAliveCount() OVERRIDE;
 
   content::BrowserContext* browser_context_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellAppsClient);
 };
 
 }  // namespace apps
 
 #endif  // APPS_SHELL_BROWSER_SHELL_APPS_CLIENT_H_