Reverting r12383, caused a build breakage on all platforms.

chrome/browser/views/go_button.h

 // Copyright (c) 2006-2008 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_VIEWS_GO_BUTTON_H__
 #define CHROME_BROWSER_VIEWS_GO_BUTTON_H__
 
 #include "chrome/views/controls/button/image_button.h"
 #include "base/task.h"
 
-class Browser;
+class CommandUpdater;
 class LocationBarView;
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // GoButton
 //
 // The go button attached to the toolbar. It shows different tooltips
 // according to the content of the location bar and changes to a stop
 // button when a page load is in progress. Trickiness comes from the
 // desire to have the 'stop' button not change back to 'go' if the user's
 // mouse is hovering over it (to prevent mis-clicks).
 //
 ////////////////////////////////////////////////////////////////////////////////
 
 class GoButton : public views::ToggleImageButton,
                  public views::ButtonListener {
  public:
-  GoButton(LocationBarView* location_bar, Browser* Browser);
+  // TODO(beng): get rid of the command updater param and instead have a
+  //             delegate.
+  GoButton(LocationBarView* location_bar, CommandUpdater* command_updater);
   virtual ~GoButton();
 
   typedef enum Mode { MODE_GO = 0, MODE_STOP };
 
   // Force the button state
   void ChangeMode(Mode mode);
 
   // Ask for a specified button state. This is commonly called by the Browser
   // when page load state changes.
   void ScheduleChangeMode(Mode mode);
 
   // Overridden from views::ButtonListener:
   virtual void ButtonPressed(views::Button* button);
-
+  
   // Overridden from views::View:
   virtual void OnMouseExited(const views::MouseEvent& e);
   virtual bool GetTooltipText(int x, int y, std::wstring* tooltip);
 
  private:
   void OnButtonTimer();
 
   int button_delay_;
   ScopedRunnableMethodFactory<GoButton> stop_timer_;
 
   LocationBarView* location_bar_;
-  Browser* browser_;
+  CommandUpdater* command_updater_;
 
   // The mode we should be in
   Mode intended_mode_;
 
   // The currently-visible mode - this may different from the intended mode
   Mode visible_mode_;
 
   DISALLOW_EVIL_CONSTRUCTORS(GoButton);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_GO_BUTTON_H__