Delete Tracked, and move Location to its own file.

ipc/ipc_sync_message_filter.cc

 // Copyright (c) 2011 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 "ipc/ipc_sync_message_filter.h"
 
+#include "base/location.h"
 #include "base/logging.h"
 #include "base/message_loop_proxy.h"
 #include "base/synchronization/waitable_event.h"
 #include "ipc/ipc_sync_message.h"
 
 using base::MessageLoopProxy;
 
 namespace IPC {
 
 SyncMessageFilter::SyncMessageFilter(base::WaitableEvent* shutdown_event)
@@ skipping 102 matching lines @@
       }
       (*iter)->done_event->Signal();
       return true;
     }
   }
 
   return false;
 }
 
 }  // namespace IPC