Use WindowActivated message instead of VisibilityChanged message to determine that Ash is the activ…

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 92 matching lines @@
   HRESULT OnKeyUp(winui::Core::ICoreWindow* sender,
                   winui::Core::IKeyEventArgs* args);
 
   // Invoked for system keys like Alt, etc.
   HRESULT OnAcceleratorKeyDown(winui::Core::ICoreDispatcher* sender,
                                winui::Core::IAcceleratorKeyEventArgs* args);
 
   HRESULT OnCharacterReceived(winui::Core::ICoreWindow* sender,
                               winui::Core::ICharacterReceivedEventArgs* args);
 
-  HRESULT OnVisibilityChanged(winui::Core::ICoreWindow* sender,
-                              winui::Core::IVisibilityChangedEventArgs* args);
-
   HRESULT OnWindowActivated(winui::Core::ICoreWindow* sender,
                             winui::Core::IWindowActivatedEventArgs* args);
 
   // Helper to handle search requests received via the search charm in ASH.
   HRESULT HandleSearchRequest(winapp::Activation::IActivatedEventArgs* args);
   // Helper to handle http/https url requests in ASH.
   HRESULT HandleProtocolRequest(winapp::Activation::IActivatedEventArgs* args);
 
   // Tasks posted to the UI thread to initiate the search/url navigation
   // requests.
   void OnSearchRequest(const string16& search_string);
   void OnNavigateToUrl(const string16& url);
 
   HRESULT OnSizeChanged(winui::Core::ICoreWindow* sender,
                         winui::Core::IWindowSizeChangedEventArgs* args);
 
   mswr::ComPtr<winui::Core::ICoreWindow> window_;
   mswr::ComPtr<winapp::Core::ICoreApplicationView> view_;
   EventRegistrationToken activated_token_;
   EventRegistrationToken pointermoved_token_;
   EventRegistrationToken pointerpressed_token_;
   EventRegistrationToken pointerreleased_token_;
   EventRegistrationToken wheel_token_;
   EventRegistrationToken keydown_token_;
   EventRegistrationToken keyup_token_;
   EventRegistrationToken character_received_token_;
-  EventRegistrationToken visibility_changed_token_;
   EventRegistrationToken accel_keydown_token_;
   EventRegistrationToken accel_keyup_token_;
   EventRegistrationToken window_activated_token_;
   EventRegistrationToken sizechange_token_;
 
   // Keep state about which button is currently down, if any, as PointerMoved
   // events do not contain that state, but Ash's MouseEvents need it.
   ui::EventFlags mouse_down_flags_;
 
   // Set the D3D swap chain and nothing else.
   metro_driver::Direct3DHelper direct3d_helper_;
 
   // The channel to Chrome, in particular to the MetroViewerProcessHost.
   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_