Make mvanouwerkerk@chromium.org a geolocation owner and reviewer.

Suggest timvolodine@chromium.org as additional reviewer.

Review URL: https://chromiumcodereview.appspot.com/23556013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225045 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 225045