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

ash/shelf/shelf_view.h

Index: ash/shelf/shelf_view.h
diff --git a/ash/shelf/shelf_view.h b/ash/shelf/shelf_view.h
index 7aac1deb419093682c696464d7071cecf58eb44a..228cc46987166e0ef23fbc3c0d4c872e06cef0e8 100644
--- a/ash/shelf/shelf_view.h
+++ b/ash/shelf/shelf_view.h
@@ -435,6 +435,13 @@ class ASH_EXPORT ShelfView : public views::View,
   // 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);
 };