GitLab

Android webview interstitials will require this code. Moving it into
components to avoid duplication.

Bug: 1016581
Change-Id: I79c9f7f274f6880a7ae102f5b747b79acb72835d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1872736Reviewed-by: Matt Menke <mmenke@chromium.org>
Reviewed-by: Emily Stark <estark@chromium.org>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Reviewed-by: Theresa  <twellington@chromium.org>
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Auto-Submit: Carlos IL <carlosil@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709175}