Change extension unload notification to indicate updates....

chrome/browser/gtk/extension_installed_bubble_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/extension_installed_bubble_gtk.h"
 
 #include <string>
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
@@ skipping 77 matching lines @@
                                           const NotificationSource& source,
                                           const NotificationDetails& details) {
   if (type == NotificationType::EXTENSION_LOADED) {
     const Extension* extension = Details<const Extension>(details).ptr();
     if (extension == extension_) {
       // PostTask to ourself to allow all EXTENSION_LOADED Observers to run.
       MessageLoopForUI::current()->PostTask(FROM_HERE, NewRunnableMethod(this,
           &ExtensionInstalledBubbleGtk::ShowInternal));
     }
   } else if (type == NotificationType::EXTENSION_UNLOADED) {
-    const Extension* extension = Details<const Extension>(details).ptr();
+    const Extension* extension =
+        Details<UnloadedExtensionInfo>(details)->extension;
     if (extension == extension_)
       extension_ = NULL;
   } else {
     NOTREACHED() << L"Received unexpected notification";
   }
 }
 
 void ExtensionInstalledBubbleGtk::ShowInternal() {
   BrowserWindowGtk* browser_window =
       BrowserWindowGtk::GetBrowserWindowForNativeWindow(
@@ skipping 195 matching lines @@
   // the window before we call Release() because close_button_ depends
   // on all references being cleared before it is destroyed.
   MessageLoopForUI::current()->PostTask(FROM_HERE, NewRunnableMethod(this,
       &ExtensionInstalledBubbleGtk::Close));
 }
 
 void ExtensionInstalledBubbleGtk::Close() {
   Release();  // Balanced in ctor.
   info_bubble_ = NULL;
 }