media: Cleanup class/struct forward declarations

media/mojo/services/interface_factory_impl.h

 // Copyright 2015 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_MOJO_SERVICES_INTERFACE_FACTORY_IMPL_H_
 #define MEDIA_MOJO_SERVICES_INTERFACE_FACTORY_IMPL_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "media/mojo/interfaces/interface_factory.mojom.h"
 #include "media/mojo/services/mojo_cdm_service_context.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/service_manager/public/cpp/service_context_ref.h"
 
-namespace service_manager {
-namespace mojom {
-class InterfaceProvider;
-}
-}
-
 namespace media {
 
 class CdmFactory;
 class MediaLog;
 class MojoMediaClient;
 class RendererFactory;
 
 class InterfaceFactoryImpl : public mojom::InterfaceFactory {
  public:
   InterfaceFactoryImpl(
@@ skipping 33 matching lines @@
   scoped_refptr<MediaLog> media_log_;
   std::unique_ptr<service_manager::ServiceContextRef> connection_ref_;
   MojoMediaClient* mojo_media_client_;
 
   DISALLOW_COPY_AND_ASSIGN(InterfaceFactoryImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_INTERFACE_FACTORY_IMPL_H_