Add a menu to the Action Box Button.

chrome/browser/ui/cocoa/location_bar/plus_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_PLUS_DECORATION_H_
 #define CHROME_BROWSER_UI_COCOA_LOCATION_BAR_PLUS_DECORATION_H_
 
 #import <Cocoa/Cocoa.h>
 
+#include "base/memory/scoped_ptr.h"
 #include "chrome/browser/ui/cocoa/location_bar/image_decoration.h"
 
+class Browser;
 class CommandUpdater;
+class LocationBarViewMac;
 
 // Note: this file is under development (see crbug.com/138118).
 
 // Plus icon on the right side of the location bar.
 class PlusDecoration : public ImageDecoration {
  public:
-  explicit PlusDecoration(CommandUpdater* command_updater);
+  PlusDecoration(LocationBarViewMac* owner,
+      CommandUpdater* command_updater,
+      Browser* browser);
   virtual ~PlusDecoration();
 
   // Implement |LocationBarDecoration|.
   virtual bool AcceptsMousePress() OVERRIDE;
   virtual bool OnMousePressed(NSRect frame) OVERRIDE;
   virtual NSString* GetToolTip() OVERRIDE;
 
  private:
+  // Owner of the decoration, used to obtain the menu.
+  LocationBarViewMac* owner_;
+
   CommandUpdater* command_updater_;  // Weak, owned by Browser.
 
+  Browser* browser_;
+
   // The string to show for a tooltip.
   scoped_nsobject<NSString> tooltip_;
 
+  scoped_nsobject<NSPopUpButtonCell> pop_up_cell_;
+
   DISALLOW_COPY_AND_ASSIGN(PlusDecoration);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_LOCATION_BAR_PLUS_DECORATION_H_