Add thread affinity and ASSERT() for same-thread restriction to WTF::Function

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

 // 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.
 
 #include "bindings/core/v8/ScriptStreamerThread.h"
 
 #include "bindings/core/v8/ScriptStreamer.h"
 #include "platform/TraceEvent.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebTaskRunner.h"
@@ skipping 35 matching lines @@
     // Now it's safe to delete s_mutex, since there are no tasks that could
     // access it later.
     delete s_mutex;
 }
 
 ScriptStreamerThread* ScriptStreamerThread::shared()
 {
     return s_sharedThread;
 }
 
-void ScriptStreamerThread::postTask(PassOwnPtr<Closure> task)
+void ScriptStreamerThread::postTask(PassOwnPtr<CrossThreadClosure> task)
 {
     ASSERT(isMainThread());
     MutexLocker locker(m_mutex);
     ASSERT(!m_runningTask);
     m_runningTask = true;
     platformThread().getWebTaskRunner()->postTask(BLINK_FROM_HERE, task);
 }
 
 void ScriptStreamerThread::taskDone()
 {
@@ skipping 17 matching lines @@
     task->Run();
     streamer->streamingCompleteOnBackgroundThread();
     MutexLocker locker(*s_mutex);
     ScriptStreamerThread* thread = shared();
     if (thread)
         thread->taskDone();
     // If thread is 0, we're shutting down.
 }
 
 } // namespace blink