[LFC] Tree builder should construct block and inline containers based on the display...

[LFC] Tree builder should construct block and inline containers based on the display type.
https://bugs.webkit.org/show_bug.cgi?id=188632

Reviewed by Antti Koivisto.

Inline elements can also construct RenderBlock renderers (inline-bloc etc), so use the display type instead when deciding what type of container to construct.

* layout/layouttree/LayoutTreeBuilder.cpp:
(WebCore::Layout::TreeBuilder::createSubTree):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@234923 268f45cc-cd09-0410-ab3c-d52691b4dbfc