GitLab

This mimics the missing logic from ExtensionAppsBase::Launch() method
specified for bookmark apps.

Note: We should not do RecordAppWindowLaunch because
web_app_launch_manager_->OpenApplication() does it.

Bug: 1062885
Change-Id: Ie5a444692b9de98087db899a73a139950cd537f9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2277367Reviewed-by: Nancy Wang <nancylingwang@chromium.org>
Commit-Queue: Alexey Baskakov <loyso@chromium.org>
Cr-Commit-Position: refs/heads/master@{#784298}