GitLab

Permissions are parsed in //extensions. Moving the manifset key to the
//extensions _manifest_features.json file would prevent app_shell from
warning about an unknown "permissions" key (if app_shell warnings were
printed).

BUG=652006
R=rdevlin.cronin@chromium.org

Review-Url: https://codereview.chromium.org/2391763003
Cr-Commit-Position: refs/heads/master@{#422632}