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diff --git a/media/base/composite_data_source_factory.h b/media/base/composite_data_source_factory.h
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+++ b/media/base/composite_data_source_factory.h
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+// 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_COMPOSITE_DATA_SOURCE_FACTORY_H_
+#define MEDIA_BASE_COMPOSITE_DATA_SOURCE_FACTORY_H_
+
+#include <list>
+#include <set>
+
+#include "base/synchronization/lock.h"
+#include "media/base/async_filter_factory_base.h"
+
+namespace media {
+
+class CompositeDataSourceFactory : public AsyncDataSourceFactoryBase {
+ public:
+  CompositeDataSourceFactory();
+  virtual ~CompositeDataSourceFactory();
+
+  // Add factory to this composite. Ownership is transferred here.
+  void AddFactory(DataSourceFactory* factory);
+
+  // DataSourceFactory method.
+  virtual DataSourceFactory* Clone() const;
+
+ protected:
+  // AsyncDataSourceFactoryBase methods.
+  virtual bool AllowRequests() const;
+  virtual AsyncDataSourceFactoryBase::BuildRequest* CreateRequest(
+      const std::string& url, BuildCallback* callback);
+
+ private:
+  class BuildRequest;
+
+  typedef std::list<DataSourceFactory*> FactoryList;
+  FactoryList factories_;
+
+  DISALLOW_COPY_AND_ASSIGN(CompositeDataSourceFactory);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_BASE_COMPOSITE_DATA_SOURCE_FACTORY_H_