Heartbeat: in isLocalFrame() compare window.location.origin to iframe.src to stop most cases where WebKit triggers errors about different iframe origin, see #23216

git-svn-id: http://core.svn.wordpress.org/trunk@24384 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Compress scripts/styles: 3.6-beta3-24385.

git-svn-id: http://core.svn.wordpress.org/trunk@24385 1a063a9b-81f0-0310-95a4-ce76da25c4cd