[Mac] Allow omnibox decorations to decline mouse events.

chrome/browser/cocoa/location_bar/page_action_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_PAGE_ACTION_DECORATION_H_
 #define CHROME_BROWSER_COCOA_LOCATION_BAR_PAGE_ACTION_DECORATION_H_
 
 #import "chrome/browser/cocoa/location_bar/image_decoration.h"
 
 #include "chrome/browser/extensions/image_loading_tracker.h"
@@ skipping 32 matching lines @@
 
   // Sets the tooltip for this Page Action image.
   void SetToolTip(NSString* tooltip);
   void SetToolTip(std::string tooltip);
 
   // Get the point where extension info bubbles should point within
   // the given decoration frame.
   NSPoint GetBubblePointInFrame(NSRect frame);
 
   // Overridden from |LocationBarDecoration|
+  virtual bool AcceptsMousePress() { return true; }
   virtual bool OnMousePressed(NSRect frame);
   virtual NSString* GetToolTip();
   virtual NSMenu* GetMenu();
 
  protected:
   // For unit testing only.
   PageActionDecoration() : owner_(NULL),
                            profile_(NULL),
                            page_action_(NULL),
                            tracker_(this),
@@ skipping 41 matching lines @@
   bool preview_enabled_;
 
   // Used to register for notifications received by
   // NotificationObserver.
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(PageActionDecoration);
 };
 
 #endif  // CHROME_BROWSER_COCOA_LOCATION_BAR_PAGE_ACTION_DECORATION_H_