[Mac] Allow omnibox decorations to decline mouse events.

chrome/browser/cocoa/location_bar/star_decoration.h

 // Copyright (c) 2010 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 CHROME_BROWSER_COCOA_LOCATION_BAR_STAR_DECORATION_H_
 #define CHROME_BROWSER_COCOA_LOCATION_BAR_STAR_DECORATION_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "chrome/browser/cocoa/location_bar/image_decoration.h"
 
 class CommandUpdater;
 
 // Star icon on the right side of the field.
 
 class StarDecoration : public ImageDecoration {
  public:
   explicit StarDecoration(CommandUpdater* command_updater);
   virtual ~StarDecoration();
 
   // Sets the image and tooltip based on |starred|.
   void SetStarred(bool starred);
 
   // Get the point where the bookmark bubble should point within the
   // decoration's frame.
   NSPoint GetBubblePointInFrame(NSRect frame);
 
   // Implement |LocationBarDecoration|.
+  virtual bool AcceptsMousePress() { return true; }
   virtual bool OnMousePressed(NSRect frame);
   virtual NSString* GetToolTip();
 
  private:
   // For bringing up bookmark bar.
   CommandUpdater* command_updater_;  // Weak, owned by Browser.
 
   // The string to show for a tooltip.
   scoped_nsobject<NSString> tooltip_;
 
   DISALLOW_COPY_AND_ASSIGN(StarDecoration);
 };
 
 #endif  // CHROME_BROWSER_COCOA_LOCATION_BAR_STAR_DECORATION_H_