Update results of 'http/tests/security/cross-frame-access-getOwnPropertyDescriptor.html'

This test was marked as failing because of differences between JSC and V8's
handling of cross-origin 'getOwnPropertyDescriptor' calls on particular attributes
of Location and Window objects. This patch updates the test to match the desired
behavior, as Blink appears to be doing the things it's decided to do. This means
we can unskip the test to get some coverage back on this fairly subtle bit of the
codebase.

BUG=20345
R=abarth@chromium.org

Review URL: https://chromiumcodereview.appspot.com/19160002

git-svn-id: svn://svn.chromium.org/blink/trunk@154306 bbb929c8-8fbe-4397-9dbb-9b2b20218538