Remove wrench button from panel.

chrome/browser/ui/gtk/browser_window_gtk.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_GTK_BROWSER_WINDOW_GTK_H_
 #define CHROME_BROWSER_UI_GTK_BROWSER_WINDOW_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
@@ skipping 44 matching lines @@
     PLAIN_TEXT
   };
 
   explicit BrowserWindowGtk(Browser* browser);
   virtual ~BrowserWindowGtk();
 
   // Separating initialization from constructor allows invocation of virtual
   // functions during initialization.
   virtual void Init();
 
-  // Shows the settings menu when the settings button, if present, is clicked.
-  // This is currently only used in panel window.
-  virtual void ShowSettingsMenu(GtkWidget* widget, GdkEventButton* event);
-
   // Allows for a derived class to decorate title text with pango markup.
   // Returns the type of text used for title.
   virtual TitleDecoration GetWindowTitle(std::string* title) const;
 
   // Gives a derived class a way to control visibility of close button.
   // Returns true if close button should be visible.
   virtual bool ShouldShowCloseButton() const;
 
   // Overridden from BrowserWindow:
   virtual void Show() OVERRIDE;
@@ skipping 500 matching lines @@
   bool debounce_timer_disabled_;
 
   FullscreenExitBubbleType fullscreen_exit_bubble_type_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserWindowGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_BROWSER_WINDOW_GTK_H_