The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fe66a0f27722cefa56bb2e4843a93f642df7f29d

commit fe66a0f27722cefa56bb2e4843a93f642df7f29d
Author: Philip Rogers <pdr@chromium.org>
Date: Mon Jul 23 22:12:29 2018

[BlinkGenPropertyTrees] Pass fast/canvas/synchronous-create-pattern.html

This test is now passing with BGPT and does not need a failing expectation:
  fast/canvas/synchronous-create-pattern.html

Bug:  853947 

Cq-Include-Trybots: luci.chromium.try:linux-blink-gen-property-trees;luci.chromium.try:linux_layout_tests_slimming_paint_v2;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Id5bdba3ce5de2b6bb8d10d3a9d9d23bf1095a5dc
Reviewed-on: https://chromium-review.googlesource.com/1146778
Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
Commit-Queue: Philip Rogers <pdr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577282}
[modify] https://crrev.com/fe66a0f27722cefa56bb2e4843a93f642df7f29d/third_party/WebKit/LayoutTests/FlagExpectations/enable-blink-gen-property-trees