GitLab

Separated the optional and required permissions in the dialog, and
added retained files as well. Also made the various types of
permissions collapsible, and added a message when the app has no
permissions whatsoever.

BUG=356985,350746

Review URL: https://codereview.chromium.org/214163002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@266518 0039d316-1c4b-4281-b951-d872f2087c98