Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/bindings/core/v8/ScriptStreamerThread.h

 // Copyright 2014 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.
 
 #ifndef ScriptStreamerThread_h
 #define ScriptStreamerThread_h
 
 #include "core/CoreExport.h"
 #include "platform/TaskSynchronizer.h"
 #include "public/platform/WebThread.h"
 #include "wtf/Functional.h"
-#include <memory>
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
+
 #include <v8.h>
 
 namespace blink {
 
 class ScriptStreamer;
 
 // A singleton thread for running background tasks for script streaming.
 class CORE_EXPORT ScriptStreamerThread {
     USING_FAST_MALLOC(ScriptStreamerThread);
     WTF_MAKE_NONCOPYABLE(ScriptStreamerThread);
 public:
     static void init();
     static void shutdown();
     static ScriptStreamerThread* shared();
 
     void postTask(std::unique_ptr<CrossThreadClosure>);
 
     bool isRunningTask() const
     {
         MutexLocker locker(m_mutex);
         return m_runningTask;
     }
 
     void taskDone();
 
-    static void runScriptStreamingTask(std::unique_ptr<v8::ScriptCompiler::ScriptStreamingTask>, ScriptStreamer*);
+    static void runScriptStreamingTask(PassOwnPtr<v8::ScriptCompiler::ScriptStreamingTask>, ScriptStreamer*);
 
 private:
     ScriptStreamerThread()
         : m_runningTask(false) { }
 
     bool isRunning() const
     {
         return !!m_thread;
     }
 
     WebThread& platformThread();
 
     // At the moment, we only use one thread, so we can only stream one script
     // at a time. FIXME: Use a thread pool and stream multiple scripts.
-    std::unique_ptr<WebThread> m_thread;
+    OwnPtr<WebThread> m_thread;
     bool m_runningTask;
     mutable Mutex m_mutex; // Guards m_runningTask.
 };
 
 } // namespace blink
 
 #endif // ScriptStreamerThread_h