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

chrome/browser/prerender/prerender_browsertest.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 <deque>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/path_service.h"
 #include "base/prefs/pref_service.h"
@@ skipping 1795 matching lines @@
   // and not pending. One and only one of the URLs (the last seen) should be the
   // active entry.
   bool url_b_is_active_prerender = UrlIsInPrerenderManager(kHtmlFileB);
   bool url_c_is_active_prerender = UrlIsInPrerenderManager(kHtmlFileC);
   EXPECT_TRUE(url_b_is_active_prerender && url_c_is_active_prerender);
 }
 
 // See crbug.com/131836.
 IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, DISABLED_PrerenderTaskManager) {
   // Show the task manager. This populates the model.
-  current_browser()->window()->ShowTaskManager();
+  chrome::OpenTaskManager(current_browser(), false);
   // Wait for the model of task manager to start.
   TaskManagerBrowserTestUtil::WaitForWebResourceChange(1);
 
   // Start with two resources.
   PrerenderTestURL("files/prerender/prerender_page.html", FINAL_STATUS_USED, 1);
 
   // One of the resources that has a WebContents associated with it should have
   // the Prerender prefix.
   const string16 prefix =
       l10n_util::GetStringFUTF16(IDS_TASK_MANAGER_PRERENDER_PREFIX, string16());
@@ skipping 954 matching lines @@
 // Checks that non-http/https main page redirects cancel the prerender.
 IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest,
                        PrerenderCancelMainFrameRedirectUnsupportedScheme) {
   GURL url = test_server()->GetURL(
       CreateServerRedirect("invalidscheme://www.google.com/test.html"));
   PrerenderTestURL(url, FINAL_STATUS_UNSUPPORTED_SCHEME, 1);
   NavigateToDestURL();
 }
 
 }  // namespace prerender