[New Multicolumn] Eliminate the unique multicolumn flow thread style creation function
https://bugs.webkit.org/show_bug.cgi?id=111338

Reviewed by Allan Jensen.

There is nothing special about a multi-column flow thread style now, so we can just
use the existing anonymous style creation function.

* rendering/RenderMultiColumnBlock.cpp:
(WebCore):
(WebCore::RenderMultiColumnBlock::addChild):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@144637 268f45cc-cd09-0410-ab3c-d52691b4dbfc