Add WebNode::isCommentNode().

This will let us remove WebNode::nodeType() and the associated enum.

Review URL: https://codereview.chromium.org/1345193004

git-svn-id: svn://svn.chromium.org/blink/trunk/public@202499 bbb929c8-8fbe-4397-9dbb-9b2b20218538
1 file changed