Cleanup web view singletons on app will terminate.

Allowing the system to destroy these objects after "exit" may be
leading to shut down crashes. Explicitly destroy these global objects
before application terminates.

Change-Id: I6227d89f861627cc3a7d74cec7b160d2d3ed35f5
Bug: 966525
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1626299
Commit-Queue: John Wu <jzw@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Reviewed-by: Hiroshi Ichikawa <ichikawa@chromium.org>
Reviewed-by: Mike Dougherty <michaeldo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#663232}
1 file changed