Tweak some DVLOGs in media code.

media/filters/video_renderer_impl.cc

 // Copyright 2013 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 "media/filters/video_renderer_impl.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/callback_helpers.h"
 #include "base/debug/trace_event.h"
@@ skipping 50 matching lines @@
     base::PlatformThread::Join(thread_);
 
   if (!init_cb_.is_null())
     base::ResetAndReturn(&init_cb_).Run(PIPELINE_ERROR_ABORT);
 
   if (!flush_cb_.is_null())
     base::ResetAndReturn(&flush_cb_).Run();
 }
 
 void VideoRendererImpl::Flush(const base::Closure& callback) {
+  DVLOG(1) << __FUNCTION__;
   DCHECK(task_runner_->BelongsToCurrentThread());
   base::AutoLock auto_lock(lock_);
   DCHECK_EQ(state_, kPlaying);
   flush_cb_ = callback;
   state_ = kFlushing;
 
   // This is necessary if the |video_frame_stream_| has already seen an end of
   // stream and needs to drain it before flushing it.
   ready_frames_.clear();
   if (buffering_state_ != BUFFERING_HAVE_NOTHING) {
     buffering_state_ = BUFFERING_HAVE_NOTHING;
     buffering_state_cb_.Run(BUFFERING_HAVE_NOTHING);
   }
   received_end_of_stream_ = false;
   rendered_end_of_stream_ = false;
 
   video_frame_stream_->Reset(
       base::Bind(&VideoRendererImpl::OnVideoFrameStreamResetDone,
                  weak_factory_.GetWeakPtr()));
 }
 
 void VideoRendererImpl::StartPlaying() {
+  DVLOG(1) << __FUNCTION__;
   DCHECK(task_runner_->BelongsToCurrentThread());
   base::AutoLock auto_lock(lock_);
   DCHECK_EQ(state_, kFlushed);
   DCHECK(!pending_read_);
   DCHECK(ready_frames_.empty());
   DCHECK_EQ(buffering_state_, BUFFERING_HAVE_NOTHING);
 
   state_ = kPlaying;
   start_timestamp_ = get_time_cb_.Run();
   AttemptRead_Locked();
@@ skipping 371 matching lines @@
     task_runner_->PostTask(FROM_HERE, base::Bind(statistics_cb_, statistics));
 
     frames_decoded_ = 0;
     frames_dropped_ = 0;
   }
 
   frame_available_.TimedWait(wait_duration);
 }
 
 }  // namespace media