WIP: Eliminate event.target() usage from TrayEventFilter

ash/shelf/overflow_bubble.h

 // Copyright 2013 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_OVERFLOW_BUBBLE_H_
 #define ASH_SHELF_OVERFLOW_BUBBLE_H_
 
 #include "base/macros.h"
 #include "ui/views/pointer_watcher.h"
 #include "ui/views/widget/widget_observer.h"
@@ skipping 29 matching lines @@
 
   bool IsShowing() const { return !!bubble_; }
   ShelfView* shelf_view() { return shelf_view_; }
   OverflowBubbleView* bubble_view() { return bubble_; }
 
  private:
   void ProcessPressedEvent(const gfx::Point& event_location_in_screen);
 
   // views::PointerWatcher:
   void OnMousePressed(const ui::MouseEvent& event,
-                      const gfx::Point& location_in_screen) override;
+                      const gfx::Point& location_in_screen,
+                      views::Widget* target) override;
   void OnTouchPressed(const ui::TouchEvent& event,
-                      const gfx::Point& location_in_screen) override;
+                      const gfx::Point& location_in_screen,
+                      views::Widget* target) override;
 
   // Overridden from views::WidgetObserver:
   void OnWidgetDestroying(views::Widget* widget) override;
 
   OverflowBubbleView* bubble_;  // Owned by views hierarchy.
   views::View* anchor_;  // Owned by ShelfView.
   ShelfView* shelf_view_;  // Owned by |bubble_|.
 
   DISALLOW_COPY_AND_ASSIGN(OverflowBubble);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELF_OVERFLOW_BUBBLE_H_