Make bookmark context menu asynchronous

ui/views/controls/menu/menu_runner.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 UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_H_
 #define UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_H_
 
 #include <stdint.h>
 
 #include "base/compiler_specific.h"
@@ skipping 102 matching lines @@
   // Runs the menu. If this returns MENU_DELETED the method is returning
   // because the MenuRunner was deleted.
   // Typically callers should NOT do any processing if this returns
   // MENU_DELETED.
   // If |anchor| uses a |BUBBLE_..| type, the bounds will get determined by
   // using |bounds| as the thing to point at in screen coordinates.
   RunResult RunMenuAt(Widget* parent,
                       MenuButton* button,
                       const gfx::Rect& bounds,
                       MenuAnchorPosition anchor,
-                      ui::MenuSourceType source_type) WARN_UNUSED_RESULT;
+                      ui::MenuSourceType source_type);
 
   // Returns true if we're in a nested message loop running the menu.
   bool IsRunning() const;
 
   // Hides and cancels the menu. This does nothing if the menu is not open.
   void Cancel();
 
   // Returns the time from the event which closed the menu - or 0.
   base::TimeDelta closing_event_time() const;
 
@@ skipping 33 matching lines @@
 
  protected:
   DisplayChangeListener() {}
 };
 
 }  // namespace internal
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_H_