Move Node::isBlockFlowElement() to htmlediting.h

Source/core/editing/ReplaceSelectionCommand.cpp

Index: Source/core/editing/ReplaceSelectionCommand.cpp
diff --git a/Source/core/editing/ReplaceSelectionCommand.cpp b/Source/core/editing/ReplaceSelectionCommand.cpp
index c7a26d1ea6e258e975b78a6ad6ade73958c2c6dc..a37b659fc389f78aa393df244524464cb1451f4a 100644
--- a/Source/core/editing/ReplaceSelectionCommand.cpp
+++ b/Source/core/editing/ReplaceSelectionCommand.cpp
@@ -856,11 +856,11 @@ void ReplaceSelectionCommand::mergeEndIfNeeded()
 static Node* enclosingInline(Node* node)
 {
     while (ContainerNode* parent = node->parentNode()) {
-        if (parent->isBlockFlowElement() || isHTMLBodyElement(*parent))
+        if (isBlockFlowElement(*parent) || isHTMLBodyElement(*parent))
             return node;
         // Stop if any previous sibling is a block.
         for (Node* sibling = node->previousSibling(); sibling; sibling = sibling->previousSibling()) {
-            if (sibling->isBlockFlowElement())
+            if (isBlockFlowElement(*sibling))
                 return node;
         }
         node = parent;