Shows the info bubble when the location bar icon is clicked in the origin chip.

chrome/browser/ui/cocoa/location_bar/zoom_decoration.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 CHROME_BROWSER_UI_COCOA_LOCATION_BAR_ZOOM_DECORATION_H_
 #define CHROME_BROWSER_UI_COCOA_LOCATION_BAR_ZOOM_DECORATION_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/basictypes.h"
@@ skipping 25 matching lines @@
   void CloseBubble();
 
  private:
   friend ZoomDecorationTest;
 
   bool IsAtDefaultZoom() const;
   bool ShouldShowDecoration() const;
 
   // LocationBarDecoration implementation.
   virtual bool AcceptsMousePress() OVERRIDE;
-  virtual bool OnMousePressed(NSRect frame) OVERRIDE;
+  virtual bool OnMousePressed(NSRect frame, NSPoint location) OVERRIDE;
   virtual NSString* GetToolTip() OVERRIDE;
   virtual NSPoint GetBubblePointInFrame(NSRect frame) OVERRIDE;
 
   // ZoomBubbleControllerDelegate implementation.
   virtual content::WebContents* GetWebContents() OVERRIDE;
   virtual void OnClose() OVERRIDE;
 
   // The control that owns this. Weak.
   LocationBarViewMac* owner_;
 
   // The bubble that this decoration shows. Weak, owns self.
   ZoomBubbleController* bubble_;
 
   // The string to show for a tooltip.
   base::scoped_nsobject<NSString> tooltip_;
 
   DISALLOW_COPY_AND_ASSIGN(ZoomDecoration);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_LOCATION_BAR_ZOOM_DECORATION_H_