ANGLE OpenGL: Cherry-pick commit GL: Flush after framebuffer change on Mac 9th gen Intel GPUs ce89d99fdeda61d9bc88fc7abd2aa3b4666d770e
Created attachment 442793 [details] Patch
Note that there are important steps to take when updating ANGLE. See https://trac.webkit.org/wiki/UpdatingANGLE
<rdar://problem/84981491>
This was merged as part of ANGLE update.