Disable SyncerThreadWithSyncerTest.Polling because it's flaky.

chrome/browser/sync/engine/syncer_thread_unittest.cc

 // Copyright (c) 2009 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 <list>
 #include <map>
 #include <set>
 #include <strstream>
 
 #include "base/command_line.h"
@@ skipping 346 matching lines @@
     ASSERT_EQ(SyncerThread::kDefaultShortPollIntervalSeconds,
               syncer_thread->CalculatePollingWaitTime(
                   status,
                   4,
                   &user_idle_milliseconds_param,
                   &continue_sync_cycle_param));
     ASSERT_FALSE(continue_sync_cycle_param);
   }
 }
 
-TEST_F(SyncerThreadWithSyncerTest, Polling) {
+// This test is disabled. see bug 23336.
+TEST_F(SyncerThreadWithSyncerTest, DISABLED_Polling) {
   SyncShareIntercept interceptor;
   connection()->SetMidCommitObserver(&interceptor);
 
   const TimeDelta poll_interval = TimeDelta::FromSeconds(1);
   syncer_thread()->SetSyncerShortPollInterval(poll_interval);
   EXPECT_TRUE(syncer_thread()->Start());
 
   // Calling Open() should cause the SyncerThread to create a Syncer.
   metadb()->Open();
 
@@ skipping 43 matching lines @@
   syncer_thread()->NudgeSyncer(5, SyncerThread::kUnknown);
   interceptor.WaitForSyncShare(1, TimeDelta::FromSeconds(1));
   EXPECT_EQ(static_cast<unsigned int>(2),
       interceptor.times_sync_occured().size());
 
   // SyncerThread should be waiting again.  Signal it to stop.
   EXPECT_TRUE(syncer_thread()->Stop(2000));
 }
 
 }  // namespace browser_sync