Introducing DecoderBuffer and general Buffer cleanup.

media/tools/seek_tester/seek_tester.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.
 //
 // This standalone binary is a helper for diagnosing seek behavior of the
 // demuxer setup in media/ code.  It answers the question: "if I ask the demuxer
 // to Seek to X ms, where will it actually seek to? (necessitating
 // frame-dropping until the original seek target is reached)".  Sample run:
 //
 // $ ./out/Debug/seek_tester .../LayoutTests/media/content/test.ogv 6300
@@ skipping 23 matching lines @@
   virtual void OnDemuxerError(media::PipelineStatus error) OVERRIDE {}
 };
 
 void QuitMessageLoop(MessageLoop* loop, media::PipelineStatus status) {
   CHECK_EQ(status, media::PIPELINE_OK);
   loop->PostTask(FROM_HERE, MessageLoop::QuitClosure());
 }
 
 void TimestampExtractor(uint64* timestamp_ms,
                         MessageLoop* loop,
-                        const scoped_refptr<media::Buffer>& buffer) {
+                        const scoped_refptr<media::DecoderBuffer>& buffer) {
   if (buffer->GetTimestamp() == media::kNoTimestamp())
     *timestamp_ms = -1;
   else
     *timestamp_ms = buffer->GetTimestamp().InMillisecondsF();
   loop->PostTask(FROM_HERE, MessageLoop::QuitClosure());
 }
 
 int main(int argc, char** argv) {
   base::AtExitManager at_exit;
   media::InitializeMediaLibraryForTesting();
@@ skipping 34 matching lines @@
         base::Bind(&TimestampExtractor, &video_seeked_to_ms, &loop));
     loop.Run();
     LOG(INFO) << "  video seeked to: " << video_seeked_to_ms << "ms";
   }
 
   demuxer->Stop(base::Bind(&MessageLoop::Quit, base::Unretained(&loop)));
   loop.Run();
 
   return 0;
 }