[Media] Disable background video optimization for streaming videos

media/blink/webmediaplayer_impl.h

Index: media/blink/webmediaplayer_impl.h
diff --git a/media/blink/webmediaplayer_impl.h b/media/blink/webmediaplayer_impl.h
index 9e0d97c2abd313ee331e6a6cbbdd4132bd35317e..a70249b9b65d6bdb85bd43013fd7f11dfe8212c0 100644
--- a/media/blink/webmediaplayer_impl.h
+++ b/media/blink/webmediaplayer_impl.h
@@ -364,6 +364,9 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerImpl
   // Returns true if the player is hidden.
   bool IsHidden() const;
 
+  // Returns true if the player's source is streaming.
+  bool IsStreaming() const;
+
   // Return whether |pipeline_metadata_| is compatible with an overlay. This
   // is intended for android.
   bool DoesOverlaySupportMetadata() const;