Fixing problem with incomplete browser windows showing up after task manager was used

chrome/browser/ui/ash/chrome_shell_delegate.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/ash/chrome_shell_delegate.h"
 
 #include "ash/ash_switches.h"
 #include "ash/host/root_window_host_factory.h"
 #include "ash/launcher/launcher_types.h"
 #include "ash/magnifier/magnifier_constants.h"
@@ skipping 147 matching lines @@
       chrome::FocusNextPane(browser);
       break;
     case ash::Shell::BACKWARD:
       chrome::FocusPreviousPane(browser);
       break;
   }
   return true;
 }
 
 void ChromeShellDelegate::ShowTaskManager() {
-  Browser* browser = chrome::FindOrCreateTabbedBrowser(
-      ProfileManager::GetDefaultProfileOrOffTheRecord(),
-      chrome::HOST_DESKTOP_TYPE_ASH);
-  chrome::OpenTaskManager(browser, false);
+  chrome::OpenTaskManager(NULL, false);
 }
 
 content::BrowserContext* ChromeShellDelegate::GetCurrentBrowserContext() {
   return ProfileManager::GetDefaultProfile();
 }
 
 app_list::AppListViewDelegate*
     ChromeShellDelegate::CreateAppListViewDelegate() {
   DCHECK(ash::Shell::HasInstance());
   // Shell will own the created delegate, and the delegate will own
@@ skipping 148 matching lines @@
 }
 
 Browser* ChromeShellDelegate::GetTargetBrowser() {
   Browser* browser = chrome::FindBrowserWithWindow(ash::wm::GetActiveWindow());
   if (browser)
     return browser;
   return chrome::FindOrCreateTabbedBrowser(
       ProfileManager::GetDefaultProfileOrOffTheRecord(),
       chrome::HOST_DESKTOP_TYPE_ASH);
 }