Get rid of the ProfileId. It was added for ceee. I reverted the original change, since it led to Profile being used in content unnecessarily. I also removed the extensions usage of it and instead kept a void*.
BUG=76788
Review URL: http://codereview.chromium.org/7346024
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@92382 0039d316-1c4b-4281-b951-d872f2087c98