Introduce the playback time into the MSE garbage collection.

media/filters/frame_processor.h

Index: media/filters/frame_processor.h
diff --git a/media/filters/frame_processor.h b/media/filters/frame_processor.h
index fcfe737572aef9e029b91df805acd9cbbe2d5cd3..86158dc59c1849cc9ecace36dd0b7932b0c6efcd 100644
--- a/media/filters/frame_processor.h
+++ b/media/filters/frame_processor.h
@@ -30,7 +30,8 @@ class MEDIA_EXPORT FrameProcessor : public FrameProcessorBase {
                              base::TimeDelta append_window_start,
                              base::TimeDelta append_window_end,
                              bool* new_media_segment,
-                             base::TimeDelta* timestamp_offset) OVERRIDE;
+                             base::TimeDelta* timestamp_offset,
+                             base::TimeDelta media_time) OVERRIDE;
 
  private:
   // Helper that processes one frame with the coded frame processing algorithm.
@@ -39,7 +40,8 @@ class MEDIA_EXPORT FrameProcessor : public FrameProcessorBase {
                     base::TimeDelta append_window_start,
                     base::TimeDelta append_window_end,
                     base::TimeDelta* timestamp_offset,
-                    bool* new_media_segment);
+                    bool* new_media_segment,
+                    base::TimeDelta media_time);
 
   // Tracks the MSE coded frame processing variable of same name. It stores the
   // highest coded frame end timestamp across all coded frames in the current