[Video] Disable bg optimization if avg keyframe distance is >10s

media/base/pipeline_impl.cc

Index: media/base/pipeline_impl.cc
diff --git a/media/base/pipeline_impl.cc b/media/base/pipeline_impl.cc
index a588bc3d067091c5d8a92ab9f092f7f9f7dc6b27..1794e44af90b0a03f0e308f4bf1e34bf77113a0a 100644
--- a/media/base/pipeline_impl.cc
+++ b/media/base/pipeline_impl.cc
@@ -647,6 +647,8 @@ void PipelineImpl::RendererWrapper::OnStatisticsUpdate(
   shared_state_.statistics.video_frames_dropped += stats.video_frames_dropped;
   shared_state_.statistics.audio_memory_usage += stats.audio_memory_usage;
   shared_state_.statistics.video_memory_usage += stats.video_memory_usage;
+  shared_state_.statistics.video_keyframe_distance_average =
+      stats.video_keyframe_distance_average;
 }
 
 void PipelineImpl::RendererWrapper::OnBufferingStateChange(