Rename Thread -> OSThread.

runtime/vm/thread_pool.h

 // Copyright (c) 2012, 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_THREAD_POOL_H_
 #define VM_THREAD_POOL_H_
 
 #include "vm/globals.h"
-#include "vm/thread.h"
+#include "vm/os_thread.h"
 
 namespace dart {
 
 class ThreadPool {
  public:
   // Subclasses of Task are able to run on a ThreadPool.
   class Task {
    protected:
     Task();
 
@@ skipping 87 matching lines @@
 
   static Monitor* exit_monitor_;  // Used only in testing.
   static int* exit_count_;        // Used only in testing.
 
   DISALLOW_COPY_AND_ASSIGN(ThreadPool);
 };
 
 }  // namespace dart
 
 #endif  // VM_THREAD_POOL_H_