Disable PrerenderBrowserTest.MatchCompleteDummy on OS X due to flaky timeouts

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 2272 matching lines @@
       PrerenderManager::PRERENDER_MODE_EXPERIMENT_CONTROL_GROUP);
   PrerenderTestURL("files/prerender/prerender_alert_before_onload.html",
                    FINAL_STATUS_WOULD_HAVE_BEEN_USED, 0);
   NavigateToDestURL();
 }
 
 // Make sure that the MatchComplete dummy works in the normal case.  Once
 // a prerender is cancelled because of a script, a dummy must be created to
 // account for the MatchComplete case, and it must have a final status of
 // FINAL_STATUS_WOULD_HAVE_BEEN_USED.
-IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, MatchCompleteDummy) {
+#if defined(OS_MACOSX)
+// http://crbug.com/142912 - Times out on Chrome Mac release builder
+#define MAYBE_MatchCompleteDummy DISABLED_MatchCompleteDummy
+#else
+#define MAYBE_MatchCompleteDummy MatchCompleteDummy
+#endif
+IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, MAYBE_MatchCompleteDummy) {
   std::deque<FinalStatus> expected_final_status_queue;
   expected_final_status_queue.push_back(FINAL_STATUS_JAVASCRIPT_ALERT);
   expected_final_status_queue.push_back(FINAL_STATUS_WOULD_HAVE_BEEN_USED);
   PrerenderTestURL("files/prerender/prerender_alert_before_onload.html",
                    expected_final_status_queue, 1);
   NavigateToDestURL();
 }
 
 class PrerenderBrowserTestWithNaCl : public PrerenderBrowserTest {
  public:
@@ skipping 88 matching lines @@
   ResultCatcher catcher;
 
   PrerenderTestURL("files/prerender/prerender_page.html", FINAL_STATUS_USED, 1);
   NavigateToDestURL();
   ASSERT_TRUE(IsEmptyPrerenderLinkManager());
 
   ASSERT_TRUE(catcher.GetNextResult()) << catcher.message();
 }
 
 }  // namespace prerender