Roll ffmpeg DEPS for MP3 seek bug, add tests.

media/filters/ffmpeg_demuxer_unittest.cc

 // 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.
 
 #include <algorithm>
 #include <deque>
 #include <string>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
@@ skipping 963 matching lines @@
   FFmpegDemuxerStream* audio = static_cast<FFmpegDemuxerStream*>(
     demuxer_->GetStream(DemuxerStream::AUDIO));
   ASSERT_TRUE(audio);
 
   // Seek to near the end of the file
   WaitableMessageLoopEvent event;
   demuxer_->Seek(.9 * audio->duration(), event.GetPipelineStatusCB());
   event.RunAndWaitForStatus(PIPELINE_OK);
 
   // Verify that seeking to the end read only a small portion of the file.
-  // Slow that read sequentially up to the seek point will fail this check.
+  // Slow seeks that read sequentially up to the seek point will read too many
+  // bytes and fail this check.
   int64 file_size = 0;
   ASSERT_TRUE(data_source_->GetSize(&file_size));
   EXPECT_LT(data_source_->bytes_read_for_testing(), (file_size * .25));
 }
 
 // MP3s should seek quickly without sequentially reading up to the seek point.
 // VBR vs CBR and the presence/absence of TOC influence the seeking algorithm.
 // See http://crbug.com/530043 and FFmpeg flag AVFMT_FLAG_FAST_SEEK.
 INSTANTIATE_TEST_CASE_P(, Mp3SeekFFmpegDemuxerTest,
                         ::testing::Values("bear-audio-10s-CBR-has-TOC.mp3",
@@ skipping 127 matching lines @@
 
   video->Read(NewReadCB(FROM_HERE, 3569, 66733, true));
   message_loop_.Run();
 
   video->Read(NewReadCB(FROM_HERE, 1042, 200200, false));
   message_loop_.Run();
 }
 #endif
 
 }  // namespace media