Updating XTBs based on .GRDs from branch master

R=cmasso@chromium.org

Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation;master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I7b159991f463ea174c4bad8b93d99442b4c679c3
Reviewed-on: https://chromium-review.googlesource.com/927662


Reviewed-by: Krishna Govind <govind@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537932}