Remove display:run-in as per https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/_tHSX…

Source/core/rendering/RenderBlock.h

Index: Source/core/rendering/RenderBlock.h
diff --git a/Source/core/rendering/RenderBlock.h b/Source/core/rendering/RenderBlock.h
index 62205f3f184738a5baf9e3a3bade963939507d2e..372fc7f2f0d5f371af152fcb8c7dc0d1681cf87a 100644
--- a/Source/core/rendering/RenderBlock.h
+++ b/Source/core/rendering/RenderBlock.h
@@ -398,9 +398,6 @@ public:
 
     LayoutUnit computeStartPositionDeltaForChildAvoidingFloats(const RenderBox* child, LayoutUnit childMarginStart, RenderRegion* = 0);
 
-    void placeRunInIfNeeded(RenderObject* newChild);
-    bool runInIsPlacedIntoSiblingBlock(RenderObject* runIn);
-
 #ifndef NDEBUG
     void checkPositionedObjectsNeedLayout();
     void showLineTreeAndMark(const InlineBox* = 0, const char* = 0, const InlineBox* = 0, const char* = 0, const RenderObject* = 0) const;
@@ -677,9 +674,6 @@ private:
     RenderBlock* containingColumnsBlock(bool allowAnonymousColumnBlock = true);
     RenderBlock* columnsBlockForSpanningElement(RenderObject* newChild);
 
-    RenderBoxModelObject* createReplacementRunIn(RenderBoxModelObject* runIn);
-    void moveRunInUnderSiblingBlockIfNeeded(RenderObject* runIn);
-    void moveRunInToOriginalPosition(RenderObject* runIn);
     // End helper functions and structs used by layoutBlockChildren.
 
 protected: