Not for submission. fastSeek prototype.

media/renderers/audio_renderer_impl.h

Index: media/renderers/audio_renderer_impl.h
diff --git a/media/renderers/audio_renderer_impl.h b/media/renderers/audio_renderer_impl.h
index d76ba06621e94ba6bd0a3a5d2cc39097b5965122..2a22ed6f34becd7157b09344eeabab76f4bb4198 100644
--- a/media/renderers/audio_renderer_impl.h
+++ b/media/renderers/audio_renderer_impl.h
@@ -33,6 +33,7 @@
 #include "media/base/audio_renderer_sink.h"
 #include "media/base/decryptor.h"
 #include "media/base/media_log.h"
+#include "media/base/stream_position.h"
 #include "media/base/time_source.h"
 #include "media/filters/audio_renderer_algorithm.h"
 #include "media/filters/decoder_stream.h"
@@ -73,6 +74,7 @@ class MEDIA_EXPORT AudioRendererImpl
   void StopTicking() override;
   void SetPlaybackRate(double rate) override;
   void SetMediaTime(base::TimeDelta time) override;
+  void SetMediaTime_Locked(base::TimeDelta time);
   base::TimeDelta CurrentMediaTime() override;
   bool GetWallClockTimes(
       const std::vector<base::TimeDelta>& media_timestamps,
@@ -85,7 +87,7 @@ class MEDIA_EXPORT AudioRendererImpl
                   const PipelineStatusCB& init_cb) override;
   TimeSource* GetTimeSource() override;
   void Flush(const base::Closure& callback) override;
-  void StartPlaying() override;
+  void StartPlayingFrom(StreamPosition position) override;
   void SetVolume(float volume) override;
 
   // base::PowerObserver implementation.
@@ -290,6 +292,8 @@ class MEDIA_EXPORT AudioRendererImpl
   // suspend/is suspended and when it resumes.
   bool is_suspending_;
 
+  bool start_rendering_from_first_frame_ = false;
+
   // End variables which must be accessed under |lock_|. ----------------------
 
   // NOTE: Weak pointers must be invalidated before all other member variables.