GitLab

Only allows ShowAppInfoFlow (and hence the app info dialog) to be
enabled on Ash and Views platforms (everything but Mac OS X for now).

This will not display the item in the context menu either.

BUG=382371

Review URL: https://codereview.chromium.org/322323002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@276646 0039d316-1c4b-4281-b951-d872f2087c98