views: Remove the implementation of about chrome dialog.

chrome/browser/ui/gtk/browser_window_gtk.cc

 // 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.
 
 #include "chrome/browser/ui/gtk/browser_window_gtk.h"
 
 #include <dlfcn.h>
 #include <gdk/gdkkeysyms.h>
 
 #include <algorithm>
@@ skipping 1036 matching lines @@
 
 void BrowserWindowGtk::ConfirmAddSearchProvider(TemplateURL* template_url,
                                                 Profile* profile) {
   new EditSearchEngineDialog(window_, template_url, NULL, profile);
 }
 
 void BrowserWindowGtk::ToggleBookmarkBar() {
   bookmark_utils::ToggleWhenVisible(browser_->profile());
 }
 
-void BrowserWindowGtk::ShowAboutChromeDialog() {
-  // Do nothing here, we show a WebUI page instead of a native one.
-}
-
 void BrowserWindowGtk::ShowUpdateChromeDialog() {
   UpdateRecommendedDialog::Show(window_);
 }
 
 void BrowserWindowGtk::ShowTaskManager() {
   TaskManagerGtk::Show(false);
 }
 
 void BrowserWindowGtk::ShowBackgroundPages() {
   TaskManagerGtk::Show(true);
@@ skipping 1526 matching lines @@
           wm_type == ui::WM_OPENBOX ||
           wm_type == ui::WM_XFWM4);
 }
 
 // static
 BrowserWindow* BrowserWindow::CreateBrowserWindow(Browser* browser) {
   BrowserWindowGtk* browser_window_gtk = new BrowserWindowGtk(browser);
   browser_window_gtk->Init();
   return browser_window_gtk;
 }