Notify the Chrome browser process about the window being activated from the viewer process.

ui/aura/remote_window_tree_host_win.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 UI_AURA_REMOTE_WINDOW_TREE_HOST_WIN_H_
 #define UI_AURA_REMOTE_WINDOW_TREE_HOST_WIN_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 79 matching lines @@
                  uint32 scan_code,
                  uint32 flags);
   void OnKeyUp(uint32 vkey,
                uint32 repeat_count,
                uint32 scan_code,
                uint32 flags);
   void OnChar(uint32 key_code,
               uint32 repeat_count,
               uint32 scan_code,
               uint32 flags);
-  void OnWindowActivated();
+  void OnWindowActivated(bool repaint);
   void OnEdgeGesture();
   void OnTouchDown(int32 x, int32 y, uint64 timestamp, uint32 pointer_id);
   void OnTouchUp(int32 x, int32 y, uint64 timestamp, uint32 pointer_id);
   void OnTouchMoved(int32 x, int32 y, uint64 timestamp, uint32 pointer_id);
   void OnSetCursorPosAck();
 
   // For Input Method support:
   ui::RemoteInputMethodPrivateWin* GetRemoteInputMethodPrivate();
   void OnImeCandidatePopupChanged(bool visible);
   void OnImeCompositionChanged(
@@ skipping 73 matching lines @@
 
   // Current size of this root window.
   gfx::Size window_size_;
 
   DISALLOW_COPY_AND_ASSIGN(RemoteWindowTreeHostWin);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_REMOTE_WINDOW_TREE_HOST_WIN_H_