Update the destination_url of the match we're opening in place, instead of
calculating a new destination.

This is necessary for the ShortcutsBackend to store the correct destination URL.

BUG=151044
TEST=none
R=beaudoin@chromium.org

Review URL: https://codereview.chromium.org/47743015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233115 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233115