aria-hidden does not seem to work on iframe elements.
Created attachment 117940 [details]
Comment on attachment 117940 [details]
View in context: https://bugs.webkit.org/attachment.cgi?id=117940&action=review
> + AccessibilityObject *webArea = webAreaObject();
The * should be next to the type.
Attachment 117940 [details] did not pass style-queue:
Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'LayoutTests/platform/mac/accessibility/ifr..." exit_code: 1
Source/WebCore/accessibility/AccessibilityScrollView.cpp:135: Declaration has space between type name and * in AccessibilityObject *webArea [whitespace/declaration] 
Total errors found: 1 in 7 files
If any of these errors are false positives, please file a bug against check-webkit-style.