Implement upgrade notifications....

chrome/browser/gtk/browser_window_gtk.cc

 // Copyright (c) 2010 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/gtk/browser_window_gtk.h"
 
 #include <gdk/gdkkeysyms.h>
 
 #include <string>
 
@@ skipping 865 matching lines @@
 
 void BrowserWindowGtk::ToggleExtensionShelf() {
   NOTIMPLEMENTED();
 }
 
 views::Window* BrowserWindowGtk::ShowAboutChromeDialog() {
   ShowAboutDialogForProfile(window_, browser_->profile());
   return NULL;
 }
 
+void BrowserWindowGtk::ShowUpdateChromeDialog() {
+  NOTIMPLEMENTED();
+}
+
 void BrowserWindowGtk::ShowTaskManager() {
   TaskManagerGtk::Show();
 }
 
 void BrowserWindowGtk::ShowBookmarkBubble(const GURL& url,
                                           bool already_bookmarked) {
   toolbar_->GetLocationBarView()->ShowStarBubble(url, !already_bookmarked);
 }
 
 bool BrowserWindowGtk::IsDownloadShelfVisible() const {
@@ skipping 1228 matching lines @@
   // are taken from the WMs' source code.
   return (wm_name == "Blackbox" ||
           wm_name == "compiz" ||
           wm_name == "e16" ||  // Enlightenment DR16
           wm_name == "KWin" ||
           wm_name == "Metacity" ||
           wm_name == "Mutter" ||
           wm_name == "Openbox" ||
           wm_name == "Xfwm4");
 }