Add a Create method to DesktopNotificationHandler and stubs for the notification objects.

chrome/browser/task_manager/task_manager.cc

 // Copyright (c) 2011 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/task_manager/task_manager.h"
 
 #include "base/compiler_specific.h"
 #include "base/i18n/number_formatting.h"
 #include "base/i18n/rtl.h"
 #include "base/process_util.h"
@@ skipping 68 matching lines @@
       goat_salt_(rand()) {
   AddResourceProvider(
       new TaskManagerBrowserProcessResourceProvider(task_manager));
   AddResourceProvider(
       new TaskManagerBackgroundContentsResourceProvider(task_manager));
   AddResourceProvider(new TaskManagerTabContentsResourceProvider(task_manager));
   AddResourceProvider(
       new TaskManagerChildProcessResourceProvider(task_manager));
   AddResourceProvider(
       new TaskManagerExtensionProcessResourceProvider(task_manager));
-  AddResourceProvider(
-      new TaskManagerNotificationResourceProvider(task_manager));
+
+  TaskManager::ResourceProvider* provider =
+      TaskManagerNotificationResourceProvider::Create(task_manager);
+  if (provider)
+    AddResourceProvider(provider);
 }
 
 TaskManagerModel::~TaskManagerModel() {
   for (ResourceProviderList::iterator iter = providers_.begin();
        iter != providers_.end(); ++iter) {
     (*iter)->Release();
   }
 }
 
 int TaskManagerModel::ResourceCount() const {
@@ skipping 929 matching lines @@
     // Count the number of extensions with background pages (including
     // incognito).
     count += CountExtensionBackgroundPagesForProfile(profile);
     if (profile->HasOffTheRecordProfile()) {
       count += CountExtensionBackgroundPagesForProfile(
           profile->GetOffTheRecordProfile());
     }
   }
   return count;
 }