Rename Thread -> OSThread.

runtime/vm/message_handler.h

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_MESSAGE_HANDLER_H_
 #define VM_MESSAGE_HANDLER_H_
 
 #include "vm/isolate.h"
 #include "vm/message.h"
-#include "vm/thread.h"
+#include "vm/os_thread.h"
 #include "vm/thread_pool.h"
 
 namespace dart {
 
 // A MessageHandler is an entity capable of accepting messages.
 class MessageHandler {
  protected:
   MessageHandler();
 
  public:
@@ skipping 152 matching lines @@
   StartCallback start_callback_;
   EndCallback end_callback_;
   CallbackData callback_data_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageHandler);
 };
 
 }  // namespace dart
 
 #endif  // VM_MESSAGE_HANDLER_H_