Rename isBlock() to isEnclosingBlock() in EditingUtilities

Source/core/editing/EditingUtilities.h

Index: Source/core/editing/EditingUtilities.h
diff --git a/Source/core/editing/EditingUtilities.h b/Source/core/editing/EditingUtilities.h
index 8cff67ff43744284607a760c36cf40c9f2a878d7..4af31a3b3b922a592d0d36848feb933428157c02 100644
--- a/Source/core/editing/EditingUtilities.h
+++ b/Source/core/editing/EditingUtilities.h
@@ -129,7 +129,7 @@ inline bool canHaveChildrenForEditing(const Node* node)
 }
 
 bool isAtomicNode(const Node*);
-CORE_EXPORT bool isBlock(const Node*);
+CORE_EXPORT bool isEnclosingBlock(const Node*);
 bool isTabHTMLSpanElement(const Node*);
 bool isTabHTMLSpanElementTextNode(const Node*);
 bool isMailHTMLBlockquoteElement(const Node*);