Don't mark a WebMediaPlayer as idle until it has size and first frame.

media/blink/webmediaplayer_impl.cc

Index: media/blink/webmediaplayer_impl.cc
diff --git a/media/blink/webmediaplayer_impl.cc b/media/blink/webmediaplayer_impl.cc
index 003d084d7aa973ba04948c9bddf7341192395248..2cd76805d0e0dfeae4994bbb8f3520d7ffd61696 100644
--- a/media/blink/webmediaplayer_impl.cc
+++ b/media/blink/webmediaplayer_impl.cc
@@ -953,6 +953,11 @@ void WebMediaPlayerImpl::OnPipelineMetadata(
     if (delegate_ && delegate_->IsHidden())
       OnHidden();
   }
+
+  // Tell the delegate we can now be safely suspended due to inactivity if a
+  // subsequent play event does not occur.
+  if (paused_)
+    NotifyPlaybackPaused();
 }
 
 void WebMediaPlayerImpl::OnPipelineBufferingStateChanged(