Regression in tests due to https://bugs.webkit.org/show_bug.cgi?id=113339
https://bugs.webkit.org/show_bug.cgi?id=113361

Source/WebCore: 

Fix the red bots. No review.

Ensure only pop-up buttons get the AXRequired attribute instead of all buttons.        

* accessibility/mac/WebAccessibilityObjectWrapperMac.mm:
(-[WebAccessibilityObjectWrapper additionalAccessibilityAttributeNames]):
(-[WebAccessibilityObjectWrapper accessibilityAttributeNames]):

LayoutTests: 

Remove skipped tests.

* platform/mac/TestExpectations:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146986 268f45cc-cd09-0410-ab3c-d52691b4dbfc