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

media/base/pipeline_status.h

Index: media/base/pipeline_status.h
diff --git a/media/base/pipeline_status.h b/media/base/pipeline_status.h
index 2899824665506cf7ffb9536a15d25661c42cfea8..df5263148bc68e8a2c8a12cc2ba9fee3d311e671 100644
--- a/media/base/pipeline_status.h
+++ b/media/base/pipeline_status.h
@@ -5,12 +5,12 @@
 #ifndef MEDIA_BASE_PIPELINE_STATUS_H_
 #define MEDIA_BASE_PIPELINE_STATUS_H_
 
-#include "base/callback.h"
-
 #include <stdint.h>
-
 #include <string>
 
+#include "base/callback.h"
+#include "base/time/time.h"
+
 namespace media {
 
 // Status states for pipeline.  All codes except PIPELINE_OK indicate errors.
@@ -59,6 +59,7 @@ struct PipelineStatistics {
   uint32_t video_frames_dropped = 0;
   int64_t audio_memory_usage = 0;
   int64_t video_memory_usage = 0;
+  base::TimeDelta video_keyframe_distance_average;
 };
 
 // Used for updating pipeline statistics; the passed value should be a delta