Squash State dirty bits for CHROMIUM_path_rendering Currently we limit the maximum of State bits to 64 for performance consideration. To accommodate new ES31 states, we have to pick and squash some existing bits which are less hot. Bug: angleproject:2814 Change-Id: I8fc19286bbf8d8273949da8d986a8b1587fa105e Reviewed-on: https://chromium-review.googlesource.com/1227069 Reviewed-by: Jie A Chen <jie.a.chen@intel.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jie A Chen <jie.a.chen@intel.com>