Make the second click on the app shelf icon close the window-list bubble.

ash/shelf/shelf_view.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 ASH_SHELF_SHELF_VIEW_H_
 #define ASH_SHELF_SHELF_VIEW_H_
 
 #include <utility>
 #include <vector>
 
@@ skipping 417 matching lines @@
 
   // True when this ShelfView is used for Overflow Bubble.
   bool overflow_mode_;
 
   // Holds a pointer to main ShelfView when a ShelfView is in overflow mode.
   ShelfView* main_shelf_;
 
   // True when ripped item from overflow bubble is entered into Shelf.
   bool dragged_off_from_overflow_to_shelf_;
 
+  // False if the event is a reposted event from a event which has just closed
+  // the same menu.
+  bool is_usable_event_;

[Mr4D (OOO till 08-26), 2014/12/05 15:21:48]

The name is rather misleading. How about "is_repost_event_"?

[xdai1, 2014/12/05 19:01:46]

Done.

+
+  // Record the index for the last pressed |ShelfItem|.
+  int last_view_index_;

[Mr4D (OOO till 08-26), 2014/12/05 15:21:48]

You might not need this. Please see comment below.

[xdai1, 2014/12/05 19:01:47]

We may still need this. Please see comment in shelf_view.cc.

+
   DISALLOW_COPY_AND_ASSIGN(ShelfView);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_VIEW_H_