Remove some old fun related to the old multicol implementation.

Source/core/layout/LayoutBlock.cpp

Index: Source/core/layout/LayoutBlock.cpp
diff --git a/Source/core/layout/LayoutBlock.cpp b/Source/core/layout/LayoutBlock.cpp
index dbabb45d2be674711d78c4a6569a463401c31789..845054173dbf0937737bdc10aa13238598fa3ce6 100644
--- a/Source/core/layout/LayoutBlock.cpp
+++ b/Source/core/layout/LayoutBlock.cpp
@@ -1132,14 +1132,8 @@ void LayoutBlock::removeChild(LayoutObject* oldChild)
             LayoutBlock* blockChildrenBlock = prev->childrenInline() ? nextBlock : prevBlock;
 
             // Place the inline children block inside of the block children block instead of deleting it.
-            // In order to reuse it, we have to reset it to just be a generic anonymous block.  Make sure
-            // to clear out inherited column properties by just making a new style, and to also clear the
-            // column span flag if it is set.
             ASSERT(!inlineChildrenBlock->continuation());
-            RefPtr<ComputedStyle> newStyle = ComputedStyle::createAnonymousStyleWithDisplay(styleRef(), BLOCK);
-            // Cache this value as it might get changed in setStyle() call.
             bool inlineChildrenBlockHasLayer = inlineChildrenBlock->hasLayer();

[dsinclair, 2015/06/04 16:35:57]

Do we still need this intermediary, we aren't calling setStyle anymore so it
shouldn't need to be cached.

[mstensho (USE GERRIT), 2015/06/04 16:43:40]

Don't really need it, but it's used further below too, so I kept it.

-            inlineChildrenBlock->setStyle(newStyle);
             children()->removeChildNode(this, inlineChildrenBlock, inlineChildrenBlockHasLayer);
 
             // Now just put the inlineChildrenBlock inside the blockChildrenBlock.