Move underflow threshold limits out of the video renderer.

media/renderers/video_renderer_impl.cc

Index: media/renderers/video_renderer_impl.cc
diff --git a/media/renderers/video_renderer_impl.cc b/media/renderers/video_renderer_impl.cc
index a43ddab64283cbb22c8e5fa36a0fb34574861967..b60f44dc4c2d0b23fd2aedd185ecd80ed119460a 100644
--- a/media/renderers/video_renderer_impl.cc
+++ b/media/renderers/video_renderer_impl.cc
@@ -190,11 +190,6 @@ void VideoRendererImpl::ThreadMain() {
   const base::TimeDelta kIdleTimeDelta =
       base::TimeDelta::FromMilliseconds(10);
 
-  // If we have no frames and haven't painted any frame for certain amount of
-  // time, declare BUFFERING_HAVE_NOTHING.
-  const base::TimeDelta kTimeToDeclareHaveNothing =
-      base::TimeDelta::FromSeconds(3);
-
   for (;;) {
     base::AutoLock auto_lock(lock_);
 
@@ -217,8 +212,7 @@ void VideoRendererImpl::ThreadMain() {
           rendered_end_of_stream_ = true;
           task_runner_->PostTask(FROM_HERE, ended_cb_);
         }
-      } else if (!last_painted_time_.is_null() &&
-                 now - last_painted_time_ >= kTimeToDeclareHaveNothing) {
+      } else {
         buffering_state_ = BUFFERING_HAVE_NOTHING;
         task_runner_->PostTask(
             FROM_HERE, base::Bind(buffering_state_cb_, BUFFERING_HAVE_NOTHING));
@@ -285,8 +279,7 @@ void VideoRendererImpl::PaintNextReadyFrame_Locked() {
   ready_frames_.pop_front();
   frames_decoded_++;
 
-  last_media_time_ = last_painted_time_ =
-      wall_clock_time_cb_.Run(next_frame->timestamp());
+  last_media_time_ = wall_clock_time_cb_.Run(next_frame->timestamp());
 
   paint_cb_.Run(next_frame);
 
@@ -443,7 +436,7 @@ void VideoRendererImpl::OnVideoFrameStreamResetDone() {
   DCHECK_EQ(buffering_state_, BUFFERING_HAVE_NOTHING);
 
   state_ = kFlushed;
-  last_media_time_ = last_painted_time_ = base::TimeTicks();
+  last_media_time_ = base::TimeTicks();
   base::ResetAndReturn(&flush_cb_).Run();
 }