Remove MessageLoop methods from Filter interface

media/base/message_loop_factory_impl.h

+// 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.
+
+#ifndef MEDIA_BASE_MESSAGE_LOOP_FACTORY_IMPL_H_
+#define MEDIA_BASE_MESSAGE_LOOP_FACTORY_IMPL_H_
+
+#include <map>
+#include <string>
+
+#include "base/threading/thread.h"
+#include "media/base/message_loop_factory.h"
+
+namespace media {
+
+class MessageLoopFactoryImpl : public MessageLoopFactory {
+ public:
+  MessageLoopFactoryImpl();
+
+  // MessageLoopFactory methods.
+  virtual MessageLoop* GetMessageLoop(const std::string& name);
+
+ protected:
+  virtual ~MessageLoopFactoryImpl();
+
+ private:
+  // Lock used to serialize access for the following data members.
+  Lock lock_;
+
+  typedef std::map<std::string, base::Thread*> ThreadMap;
+  ThreadMap thread_map_;
+
+  DISALLOW_COPY_AND_ASSIGN(MessageLoopFactoryImpl);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_BASE_MESSAGE_LOOP_FACTORY_IMPL_H_