HTML_INSTANT_EXTENDED_POPUP is nowhere defined. Remove it from tests

BUG=none
R=samarth@chromium.org

Review URL: https://chromiumcodereview.appspot.com/24262006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224597 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 224597