gcc 4.6 warnings cleanup

media/filters/ffmpeg_demuxer_unittest.cc

 // 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.
 
 #include <deque>
 
 #include "base/file_path.h"
 #include "base/path_service.h"
 #include "base/threading/thread.h"
 #include "media/base/filters.h"
@@ skipping 220 matching lines @@
   reader->Read(video);
   message_loop_.RunAllPending();
   EXPECT_TRUE(reader->called());
   ValidateBuffer(FROM_HERE, reader->buffer(), 1057, 33000);
 }
 
 TEST_F(FFmpegDemuxerTest, Read_VideoNonZeroStart) {
   // Test the start time is the first timestamp of the video and audio stream.
   InitializeDemuxer(CreateDataSource("nonzero-start-time.webm"));
 
-  const base::TimeDelta kExpectedTimestamp =
-      base::TimeDelta::FromMicroseconds(396000);
-
   // Attempt a read from the video stream and run the message loop until done.
   scoped_refptr<DemuxerStream> video =
       demuxer_->GetStream(DemuxerStream::VIDEO);
   scoped_refptr<DemuxerStream> audio =
       demuxer_->GetStream(DemuxerStream::AUDIO);
   scoped_refptr<DemuxerStreamReader> reader(new DemuxerStreamReader());
 
   // Check first buffer in video stream.
   reader->Read(video);
   message_loop_.RunAllPending();
@@ skipping 321 matching lines @@
 
 TEST_F(FFmpegDemuxerTest, ProtocolIsStreaming) {
   scoped_refptr<DataSource> data_source = CreateDataSource("bear-320x240.webm");
   InitializeDemuxer(data_source);
 
   EXPECT_FALSE(data_source->IsStreaming());
   EXPECT_FALSE(demuxer_->IsStreaming());
 }
 
 }  // namespace media