Disable share context lock for Chromium Bug: chromium:1336126 Change-Id: I93b4e738a8816e6b318e5d5823bc9130f17deb37 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3781368 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Peng Huang <penghuang@chromium.org>