GitLab

Originally landed in: https://crrev.com/c/1687795
Reverted in: https://crrev.com/c/1746959
Reason for revert: Use-after-free of browser context.
Fix in reland: Store service instance group token in the callback and
               map that to the browser context when necessary. If the
               browser context has been freed, the mapping will return a
               nullptr.

Bug: 980249, 992285
Change-Id: I8a92dd448cc81c940cb18bc9596f6af3329aee39
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1749982Reviewed-by: Danyao Wang <danyao@chromium.org>
Commit-Queue: Rouslan Solomakhin <rouslan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#686422}