Revert "Disable share context lock for Chromium" This reverts commit e1741f4ba7dae4f6f09829b9152360544c912d1f. Reason for revert: Breaks SwANGLE tests when rolled into Chrome: https://chromium-review.googlesource.com/c/chromium/src/+/3789604/ Original change's description: > 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> Bug: chromium:1336126 Change-Id: Id3484b79aa9f8b914eca0f72c20d286ec1c03857 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3792164 Auto-Submit: Jamie Madill <jmadill@chromium.org> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> Commit-Queue: Jamie Madill <jmadill@chromium.org>