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

ipc/ipc_sync_message.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 "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 #include <stack>
 
 #include "base/atomic_sequence_num.h"
 #include "base/logging.h"
-#include "base/waitable_event.h"
+#include "base/synchronization/waitable_event.h"
 #include "ipc/ipc_sync_message.h"
 
 namespace IPC {
 
 #define kSyncMessageHeaderSize 4
 
 static base::AtomicSequenceNumber g_next_id(base::LINKER_INITIALIZED);
 
 static base::WaitableEvent* dummy_event = new base::WaitableEvent(true, true);
 
@@ skipping 94 matching lines @@
 
   return true;
 }
 
 
 bool MessageReplyDeserializer::SerializeOutputParameters(const Message& msg) {
   return SerializeOutputParameters(msg, SyncMessage::GetDataIterator(&msg));
 }
 
 }  // namespace IPC