Remove block continuation support.

Source/core/layout/LayoutObject.cpp

Index: Source/core/layout/LayoutObject.cpp
diff --git a/Source/core/layout/LayoutObject.cpp b/Source/core/layout/LayoutObject.cpp
index b2dd0cfcc2827188b9e9e9a21935dcff4e8e59ac..02136cb7a7bae8e31da6f3e93162eab23148b6ba 100644
--- a/Source/core/layout/LayoutObject.cpp
+++ b/Source/core/layout/LayoutObject.cpp
@@ -1090,12 +1090,6 @@ String LayoutObject::decoratedName() const
 
     if (isAnonymous())
         name.append(" (anonymous)");
-    if (style()) {
-        if (isAnonymousColumnsBlock())
-            name.append(" (anonymous multi-column)");
-        if (isAnonymousColumnSpanBlock())
-            name.append(" (anonymous multi-column span)");
-    }
     if (isOutOfFlowPositioned())
         name.append(" (positioned)");
     if (isRelPositioned())
@@ -2559,9 +2553,6 @@ void LayoutObject::destroyAndCleanupAnonymousWrappers()
         // A flow thread is tracked by its containing block. Whether its children are removed or not is irrelevant.
         if (destroyRootParent->isLayoutFlowThread())
             break;
-        // Column spans are tracked elsewhere.
-        if (destroyRootParent->isAnonymousColumnSpanBlock())
-            break;
 
         if (destroyRootParent->slowFirstChild() != destroyRoot || destroyRootParent->slowLastChild() != destroyRoot)
             break; // Need to keep the anonymous parent, since it won't become empty by the removal of this layoutObject.