Disable all the tests that are flaking more than 5% on Windows builders.

chrome/browser/safe_browsing/safe_browsing_service_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.
 //
 // This test creates a safebrowsing service using test safebrowsing database
 // and a test protocol manager. It is used to test logics in safebrowsing
 // service.
 
 #include <algorithm>
 
@@ skipping 697 matching lines @@
   GenUrlFullhashResult(badbin_url, safe_browsing_util::BINURL,
                        &full_hash_result);
   SetupResponseForUrl(badbin_url, full_hash_result);
 
   client->CheckDownloadUrl(badbin_urls);
 
   // Now, the badbin_url is not safe since it is added to download database.
   EXPECT_EQ(SB_THREAT_TYPE_BINARY_MALWARE_URL, client->GetThreatType());
 }
 
-IN_PROC_BROWSER_TEST_F(SafeBrowsingServiceTest, CheckDownloadUrlTimedOut) {
+#if defined(OS_WIN)
+// http://crbug.com/396409
+#define MAYBE_CheckDownloadUrlTimedOut DISABLED_CheckDownloadUrlTimedOut
+#else
+#define MAYBE_CheckDownloadUrlTimedOut CheckDownloadUrlTimedOut
+#endif
+IN_PROC_BROWSER_TEST_F(SafeBrowsingServiceTest,
+                       MAYBE_CheckDownloadUrlTimedOut) {
   GURL badbin_url = test_server()->GetURL(kMalwareFile);
   std::vector<GURL> badbin_urls(1, badbin_url);
 
   scoped_refptr<TestSBClient> client(new TestSBClient);
   SBFullHashResult full_hash_result;
   GenUrlFullhashResult(badbin_url, safe_browsing_util::BINURL,
                        &full_hash_result);
   SetupResponseForUrl(badbin_url, full_hash_result);
   client->CheckDownloadUrl(badbin_urls);
 
@@ skipping 268 matching lines @@
   content::WindowedNotificationObserver observer(
       chrome::NOTIFICATION_SAFE_BROWSING_UPDATE_COMPLETE,
       content::Source<SafeBrowsingDatabaseManager>(
           sb_service_->database_manager().get()));
   BrowserThread::PostTask(
       BrowserThread::IO,
       FROM_HERE,
       base::Bind(&SafeBrowsingDatabaseManagerCookieTest::ForceUpdate, this));
   observer.Wait();
 }