Implement OptInUrls using the same mechanism we use in the onhttpequiv notification.
A noteworthy change here is that OptInUrls doesn't rely on cf: anymore.

TEST=The OptInUrls registry key should start working properly again.
BUG=32660

Review URL: http://codereview.chromium.org/549129

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@36874 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed