Change FirstBodyElement to check the document is a HTML Document.
The CSS spec specifies that the document must be a HTML Document.
Layout test asserts this:
http://w3c-test.org/cssom-view/scrollingElement.html
There is one other user of FirstBodyElement since it was first
added. The background style propagation from the HTML body
element to the HTML element. It appears before it was rewritten
it was checking that the document was a HTML document as well.
So I think this is safe to make the API match the spec.
BUG=157855,665927
Change-Id: Iafbe7c25011cdde2c89b3d839dcfb08e5bc12c3e
Reviewed-on: https://chromium-review.googlesource.com/527462
Reviewed-by: Rick Byers <rbyers@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#478262}1 file changed
