GitLab

Refactor the current app pause dialog view, to add a base class app
dialog, to keep consistency for the app pause dialog and the app block
dialog. The app uninstall dialog might be changed to inherit from app
dialog as well, when the decision has been made for
https://bugs.chromium.org/p/chromium/issues/detail?id=1010303

BUG=1035136

Change-Id: I2e5a17f75bce8f343d15ffa1b7e7b542ea433b8a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2060433Reviewed-by: Trent Apted <tapted@chromium.org>
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Reviewed-by: Aga Wronska <agawronska@chromium.org>
Commit-Queue: Nancy Wang <nancylingwang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#743393}