Move CancellationFlag and WaitableEvent to the synchronization subdirectory....

net/proxy/sync_host_resolver_bridge_unittest.cc

 // Copyright (c) 2010 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 "net/proxy/sync_host_resolver_bridge.h"
 
 #include "base/threading/thread.h"
-#include "base/waitable_event.h"
+#include "base/synchronization/waitable_event.h"
 #include "net/base/address_list.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_log.h"
 #include "net/proxy/multi_threaded_proxy_resolver.h"
 #include "net/base/test_completion_callback.h"
 #include "net/proxy/proxy_info.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 // TODO(eroman): This test should be moved into
 //               multi_threaded_proxy_resolver_unittest.cc.
@@ skipping 206 matching lines @@
   // stop the IOThread, which will in turn delete the
   // SingleThreadedProxyResolver, which in turn will stop its internal
   // PAC thread (which is currently blocked waiting on the host resolve which
   // is running on IOThread).  The IOThread::Cleanup() will verify that after
   // the PAC thread is stopped, it cancels the request on the HostResolver.
 }
 
 }  // namespace
 
 }  // namespace net