Disable PrerenderTaskManager. It's flaky on Win (dbg).

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 "base/command_line.h"
 #include "base/path_service.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
@@ skipping 1468 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) &&
               !(url_b_is_active_prerender && url_c_is_active_prerender));
   EXPECT_FALSE(UrlIsPendingInPrerenderManager(kHtmlFileB));
   EXPECT_FALSE(UrlIsPendingInPrerenderManager(kHtmlFileC));
 }
 
-IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, PrerenderTaskManager) {
+// See crbug.com/131836.
+IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, DISABLED_PrerenderTaskManager) {
   // Show the task manager. This populates the model.
   current_browser()->window()->ShowTaskManager();
   // Wait for the model of task manager to start.
   TaskManagerBrowserTestUtil::WaitForResourceChange(2);
 
   // 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.
@@ skipping 746 matching lines @@
 IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, PrerenderSSLReferrerPolicy) {
   set_use_https_src(true);
   set_loader_path("files/prerender/prerender_loader_with_referrer_policy.html");
   PrerenderTestURL("files/prerender/prerender_referrer_policy.html",
                    FINAL_STATUS_USED,
                    1);
   NavigateToDestURL();
 }
 
 }  // namespace prerender