Fix issue with permissions extension API event listeners.

Make sure the renderers receive the changes in permissions before triggering the permissions.onAdded and permission.onRemoved extension events.

BUG=48119
TEST=*OptionalPermission*


Review URL: http://codereview.chromium.org/7695003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@97679 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed