[Media, Video] Update WMPI when the pipeline gets a new average keyframe distance.

media/blink/webmediaplayer_impl.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_BLINK_WEBMEDIAPLAYER_IMPL_H_
 #define MEDIA_BLINK_WEBMEDIAPLAYER_IMPL_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 247 matching lines @@
   void OnError(PipelineStatus status) override;
   void OnEnded() override;
   void OnMetadata(PipelineMetadata metadata) override;
   void OnBufferingStateChange(BufferingState state) override;
   void OnDurationChange() override;
   void OnAddTextTrack(const TextTrackConfig& config,
                       const AddTextTrackDoneCB& done_cb) override;
   void OnWaitingForDecryptionKey() override;
   void OnVideoNaturalSizeChange(const gfx::Size& size) override;
   void OnVideoOpacityChange(bool opaque) override;
+  void OnVideoAverageKeyframeDistanceUpdate() override;
 
   // Actually seek. Avoids causing |should_notify_time_changed_| to be set when
   // |time_updated| is false.
   void DoSeek(base::TimeDelta time, bool time_updated);
 
   // Called after |defer_load_cb_| has decided to allow the load. If
   // |defer_load_cb_| is null this is called immediately.
   void DoLoad(LoadType load_type,
               const blink::WebURL& url,
               CORSMode cors_mode);
@@ skipping 416 matching lines @@
 
   // Pipeline media duration overridden by tests.
   base::Optional<base::TimeDelta> pipeline_media_duration_for_test_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WEBMEDIAPLAYER_IMPL_H_