Do not use overlays when VR shell is enabled.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 0179a9c1a5568f865c138447966a8f0d0b83418a..6c90e1e6c9c3180213fec48e8556636e059a4a10 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -2857,6 +2857,13 @@ blink::WebMediaPlayer* RenderFrameImpl::createMediaPlayer(
       GetWebMediaPlayerDelegate()->AsWeakPtr(),
       std::move(media_renderer_factory), url_index_, params);
 
+  // TODO(http://crbug.com/673886): Re-enable overlays with VR shell enabled when VR

[ddorwin, 2016/12/16 19:15:18]

`>80 chars

[amp, 2016/12/16 19:25:03]

Done.  Too many rewordings. :)  I'm surprised git cl upload didn't catch it.

+  // shell's video reprojection surface is enabled. Remove the setter and put
+  // the overlay feature check back in the WMPI constructor at that time.
+  media_player->SetEnableFullscreenOverlays(
+      base::FeatureList::IsEnabled(media::kOverlayFullscreenVideo) &&
+      !base::FeatureList::IsEnabled(features::kVrShell));
+
 #if defined(OS_ANDROID)  // WMPI_CAST
   media_player->SetMediaPlayerManager(GetMediaPlayerManager());
   media_player->SetDeviceScaleFactor(render_view_->GetDeviceScaleFactor());