GitLab

WebAppBrowserController should be Extensions agnostic.

If we need |reason| or |source| in the future, we will add a
nested enum in WebAppBrowserController.

Bug: 953540
Change-Id: I6e277394993f474429ce8490dbd564ce9da7d87a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1570945Reviewed-by: Alan Cutter <alancutter@chromium.org>
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Alexey Baskakov <loyso@chromium.org>
Cr-Commit-Position: refs/heads/master@{#653469}