Ensure that mouse lock works correctly on Chrome ASH in Windows 8.

ui/aura/remote_window_tree_host_win.h

Index: ui/aura/remote_window_tree_host_win.h
diff --git a/ui/aura/remote_window_tree_host_win.h b/ui/aura/remote_window_tree_host_win.h
index 7a545800876d2e9f822a0bff6afa9b48fcaa2fd9..9a726d1cccf35bcf9cb2eeed3c67d5df639a4837 100644
--- a/ui/aura/remote_window_tree_host_win.h
+++ b/ui/aura/remote_window_tree_host_win.h
@@ -171,9 +171,9 @@ class AURA_EXPORT RemoteWindowTreeHostWin
   IPC::Sender* host_;
   scoped_ptr<ui::ViewProp> prop_;
 
-  // Set to true if we need to ignore mouse messages until the SetCursorPos
+  // Incremented if we need to ignore mouse messages until the SetCursorPos
   // operation is acked by the viewer.
-  bool ignore_mouse_moves_until_set_cursor_ack_;
+  int ignore_mouse_moves_until_set_cursor_ack_;
 
   // Tracking last click event for synthetically generated mouse events.
   scoped_ptr<ui::MouseEvent> last_mouse_click_event_;