Having a totally transparent page overlay layer on top of the web view is expensive (perf, memory, and power) if you don’t need it. We already create the layer lazily, but there’s no way to get rid of it again.
Created attachment 222035 [details]
Comment on attachment 222035 [details]
Clearing flags on attachment: 222035
Committed r162662: <http://trac.webkit.org/changeset/162662>
All reviewed patches have been landed. Closing bug.