Keyboard input should be disabled in the preview popover
Created attachment 242481 [details] Patch
<rdar://problem/19052381>
Created attachment 242513 [details] Patch
http://trac.webkit.org/changeset/176753
Reopening to attach new patch.
Created attachment 242656 [details] Patch
Follow up in http://trac.webkit.org/changeset/176870