media: Cleanup class/struct forward declarations

media/test/pipeline_integration_test_base.h

 // Copyright (c) 2012 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_TEST_PIPELINE_INTEGRATION_TEST_BASE_H_
 #define MEDIA_TEST_PIPELINE_INTEGRATION_TEST_BASE_H_
 
 #include <stdint.h>
 #include <memory>
 
 #include "base/md5.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
 #include "media/audio/clockless_audio_sink.h"
 #include "media/audio/null_audio_sink.h"
 #include "media/base/demuxer.h"
 #include "media/base/media_keys.h"
 #include "media/base/null_video_sink.h"
 #include "media/base/pipeline_impl.h"
 #include "media/base/pipeline_status.h"
 #include "media/base/text_track.h"
 #include "media/base/text_track_config.h"
 #include "media/base/video_frame.h"
 #include "media/renderers/video_renderer_impl.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
-namespace base {
-class FilePath;
-}
-
 namespace media {
 
 class AudioDecoder;
 class CdmContext;
 class VideoDecoder;
 
 // Empty MD5 hash string.  Used to verify empty video tracks.
 extern const char kNullVideoHash[];
 
 // Empty hash string.  Used to verify empty audio tracks.
@@ skipping 167 matching lines @@
                void(const TextTrackConfig& config,
                     const AddTextTrackDoneCB& done_cb));
   MOCK_METHOD0(OnWaitingForDecryptionKey, void(void));
   MOCK_METHOD1(OnVideoNaturalSizeChange, void(const gfx::Size&));
   MOCK_METHOD1(OnVideoOpacityChange, void(bool));
 };
 
 }  // namespace media
 
 #endif  // MEDIA_TEST_PIPELINE_INTEGRATION_TEST_BASE_H_