GitLab

This instead calls OnError to allow for proper cleanup
when web contents destruction occurs.

Bug: Internal b/146500172
Test: Build cast_shell
Change-Id: I4c83313c8324e361cdb0a0275bfa76ea1a5ae72b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1985810
Commit-Queue: Shawn Gallea <sagallea@google.com>
Reviewed-by: Daniel Nicoara <dnicoara@chromium.org>
Cr-Commit-Position: refs/heads/master@{#733468}