mash: Don't close system tray bubble for clicks in menus/notifications

ash/pointer_watcher_delegate_aura.h

Index: ash/pointer_watcher_delegate_aura.h
diff --git a/ash/pointer_watcher_delegate_aura.h b/ash/pointer_watcher_delegate_aura.h
index 8a7eb662ca4232c8b88641da30528d4f3ee277fa..b6c31bda723c0193ee5f840baddf0cafafe00202 100644
--- a/ash/pointer_watcher_delegate_aura.h
+++ b/ash/pointer_watcher_delegate_aura.h
@@ -16,6 +16,10 @@ namespace ui {
 class LocatedEvent;
 }
 
+namespace views {
+class Widget;
+}
+
 namespace ash {
 
 // Support for PointerWatchers in non-mus ash, implemented with a pre-target
@@ -36,6 +40,7 @@ class ASH_EXPORT PointerWatcherDelegateAura : public PointerWatcherDelegate,
 
  private:
   gfx::Point GetLocationInScreen(const ui::LocatedEvent& event) const;
+  views::Widget* GetTargetWidget(const ui::LocatedEvent& event) const;
 
   // Must be empty on destruction.
   base::ObserverList<views::PointerWatcher, true> pointer_watchers_;