Mark PrerenderBrowserTest.PrerenderUnload as flaky on Win

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 2003 matching lines @@
   ui_test_utils::WindowedNotificationObserver favicon_update_watcher(
       chrome::NOTIFICATION_FAVICON_UPDATED,
       content::Source<WebContents>(prerender_contents->prerender_contents()->
                           web_contents()));
   NavigateToDestURL();
   favicon_update_watcher.Wait();
 }
 
 // Checks that when a prerendered page is swapped in to a referring page, the
 // unload handlers on the referring page are executed.
-IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, PrerenderUnload) {
+#if defined(OS_WIN)
+#define MAYBE_PrerenderUnload FLAKY_PrerenderUnload
+#else
+#define MAYBE_PrerenderUnload PrerenderUnload
+#endif
+IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, MAYBE_PrerenderUnload) {
   set_loader_path("files/prerender/prerender_loader_with_unload.html");
   PrerenderTestURL("files/prerender/prerender_page.html", FINAL_STATUS_USED, 1);
   string16 expected_title = ASCIIToUTF16("Unloaded");
   ui_test_utils::TitleWatcher title_watcher(
       current_browser()->GetSelectedWebContents(), expected_title);
   NavigateToDestURL();
   EXPECT_EQ(expected_title, title_watcher.WaitAndGetTitle());
 }
 
 // Checks that when the history is cleared, prerendering is cancelled and
@@ skipping 208 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