mash: Close the system tray bubble on click outside its bounds

ash/system/tray/system_tray.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_SYSTEM_TRAY_SYSTEM_TRAY_H_
 #define ASH_SYSTEM_TRAY_SYSTEM_TRAY_H_
 
 #include <map>
 #include <memory>
 #include <vector>
@@ skipping 111 matching lines @@
 
   // Returns true if the bubble exists.
   bool CloseNotificationBubbleForTest() const;
 
   // Overridden from TrayBackgroundView.
   void SetShelfAlignment(wm::ShelfAlignment alignment) override;
   void AnchorUpdated() override;
   base::string16 GetAccessibleNameForTray() override;
   void BubbleResized(const views::TrayBubbleView* bubble_view) override;
   void HideBubbleWithView(const views::TrayBubbleView* bubble_view) override;
-  bool ClickedOutsideBubble() override;
+  void ClickedOutsideBubble() override;
 
   // Overridden from message_center::TrayBubbleView::Delegate.
   void BubbleViewDestroyed() override;
   void OnMouseEnteredView() override;
   void OnMouseExitedView() override;
   base::string16 GetAccessibleNameForBubble() override;
   gfx::Rect GetAnchorRect(views::Widget* anchor_widget,
                           AnchorType anchor_type,
                           AnchorAlignment anchor_alignment) const override;
   void HideBubble(const views::TrayBubbleView* bubble_view) override;
@@ skipping 99 matching lines @@
   // A reference to the Screen share and capture item.
   ScreenTrayItem* screen_capture_tray_item_;  // not owned
   ScreenTrayItem* screen_share_tray_item_;  // not owned
 
   DISALLOW_COPY_AND_ASSIGN(SystemTray);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_H_