Seems to be causing rendering regressions in the Google Maps benchmark.
Likely causing other serious regressions.

Original CL: https://chromium-review.googlesource.com/c/angle/angle/+/1684294

Bug: angleproject:3256
Change-Id: I41608a3ce3c3267097b4c1c0a6f7450cf8a2f48f
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1709756Reviewed-by: Cody Northrop <cnorthrop@google.com>
Commit-Queue: Jamie Madill <jmadill@chromium.org>