media::SilentSinkSuspender should simulate |delay| and |delay_timestamp|

media/base/fake_audio_render_callback.h

Index: media/base/fake_audio_render_callback.h
diff --git a/media/base/fake_audio_render_callback.h b/media/base/fake_audio_render_callback.h
index 5e2a600bfab099d8903663384fac2f96e79f1812..23caed15c36d846f985462977793973035080387 100644
--- a/media/base/fake_audio_render_callback.h
+++ b/media/base/fake_audio_render_callback.h
@@ -44,9 +44,9 @@ class FakeAudioRenderCallback
   // Reset the sine state to initial value.
   void reset() { x_ = 0; }
 
-  // Returns the last |frames_delayed| provided to Render() or -1 if
-  // no Render() call occurred.
-  int last_frames_delayed() const { return last_frames_delayed_; }
+  // Returns the last |delay| provided to Render() or base::TimeDelta::Max()
+  // if no Render() call occurred.
+  base::TimeDelta last_delay() const { return last_delay_; }
 
   // Set volume information used by ProvideAudioTransformInput().
   void set_volume(double volume) { volume_ = volume; }
@@ -54,14 +54,12 @@ class FakeAudioRenderCallback
   int last_channel_count() const { return last_channel_count_; }
 
  private:
-  int RenderInternal(AudioBus* audio_bus,
-                     uint32_t frames_delayed,
-                     double volume);
+  int RenderInternal(AudioBus* audio_bus, base::TimeDelta delay, double volume);
 
   bool half_fill_;
   double x_;
   double step_;
-  int last_frames_delayed_;
+  base::TimeDelta last_delay_;
   int last_channel_count_;
   double volume_;