Interpolate media time for mojo rendering pipeline.

media/renderers/audio_renderer_impl.cc

Index: media/renderers/audio_renderer_impl.cc
diff --git a/media/renderers/audio_renderer_impl.cc b/media/renderers/audio_renderer_impl.cc
index afd298b657701e96f52946849041fb91d08d9d19..20da11152b0f2908aab2ec4ae7a438a5a8cbae47 100644
--- a/media/renderers/audio_renderer_impl.cc
+++ b/media/renderers/audio_renderer_impl.cc
@@ -177,7 +177,6 @@ void AudioRendererImpl::SetMediaTime(base::TimeDelta time) {
   ended_timestamp_ = kInfiniteDuration;
   last_render_time_ = stop_rendering_time_ = base::TimeTicks();
   first_packet_timestamp_ = kNoTimestamp;
-  last_media_timestamp_ = base::TimeDelta();
   audio_clock_.reset(new AudioClock(time, audio_parameters_.sample_rate()));
 }
 
@@ -194,20 +193,6 @@ base::TimeDelta AudioRendererImpl::CurrentMediaTime() {
       current_media_time = audio_clock_->back_timestamp();
   }
 
-  // Clamp current media time to the last reported value, this prevents higher
-  // level clients from seeing time go backwards based on inaccurate or spurious
-  // delay values reported to the AudioClock.
-  //
-  // It is expected that such events are transient and will be recovered as
-  // rendering continues over time.
-  if (current_media_time < last_media_timestamp_) {
-    DVLOG(2) << __func__ << ": " << last_media_timestamp_
-             << " (clamped), actual: " << current_media_time;
-    return last_media_timestamp_;
-  }
-
-  DVLOG(2) << __func__ << ": " << current_media_time;
-  last_media_timestamp_ = current_media_time;
   return current_media_time;
 }