GitLab

This CL formats the WebVR timeout UI to match the design. It also
contains an update to the button API to propagate size changes to its
constituent elements.

Bug: None
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: Ied5d8c85c6c2e5439c64cc1056d021474c7eeedb
Reviewed-on: https://chromium-review.googlesource.com/789418Reviewed-by: Tibor Goldschwendt <tiborg@chromium.org>
Reviewed-by: Christopher Grant <cjgrant@chromium.org>
Reviewed-by: Biao She <bshe@chromium.org>
Commit-Queue: Ian Vollick <vollick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#519436}