Make the metro viewer responsible for relaunching browser in desktop mode.

win8/metro_driver/chrome_app_view_ash.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 WIN8_METRO_DRIVER_CHROME_APP_VIEW_ASH_H_
 #define WIN8_METRO_DRIVER_CHROME_APP_VIEW_ASH_H_
 
 #include <windows.applicationmodel.core.h>
 #include <windows.ui.core.h>
 #include <windows.ui.input.h>
@@ skipping 28 matching lines @@
   IFACEMETHOD(Initialize)(winapp::Core::ICoreApplicationView* view);
   IFACEMETHOD(SetWindow)(winui::Core::ICoreWindow* window);
   IFACEMETHOD(Load)(HSTRING entryPoint);
   IFACEMETHOD(Run)();
   IFACEMETHOD(Uninitialize)();
 
   // Helper function to unsnap the chrome metro app if it is snapped.
   // Returns S_OK on success.
   static HRESULT Unsnap();
 
+  void OnOpenURLOnDesktop(const string16& shortcut, const string16& url);
   void OnSetCursor(HCURSOR cursor);
   void OnDisplayFileOpenDialog(const string16& title,
                                const string16& filter,
                                const base::FilePath& default_path,
                                bool allow_multiple_files);
   void OnDisplayFileSaveAsDialog(
       const MetroViewerHostMsg_SaveAsDialogParams& params);
   void OnDisplayFolderPicker(const string16& title);
   void OnSetCursorPos(int x, int y);
 
@@ skipping 93 matching lines @@
   IPC::ChannelProxy* ui_channel_;
 
   // The actual window behind the view surface.
   HWND core_window_hwnd_;
 
   // UI message loop to allow message passing into this thread.
   base::MessageLoop ui_loop_;
 };
 
 #endif  // WIN8_METRO_DRIVER_CHROME_APP_VIEW_ASH_H_