Rename isBlock() to isEnclosingBlock() in EditingUtilities

Source/core/editing/commands/FormatBlockCommand.cpp

Index: Source/core/editing/commands/FormatBlockCommand.cpp
diff --git a/Source/core/editing/commands/FormatBlockCommand.cpp b/Source/core/editing/commands/FormatBlockCommand.cpp
index 4b59e20b948b9844f113f854bcc0e2258feb46f2..d06e0da9ab9e7ee4e66474573e4b76dd56b93fcd 100644
--- a/Source/core/editing/commands/FormatBlockCommand.cpp
+++ b/Source/core/editing/commands/FormatBlockCommand.cpp
@@ -166,7 +166,7 @@ Node* enclosingBlockToSplitTreeTo(Node* startNode)
             return lastBlock;
         if (isTableCell(n) || isHTMLBodyElement(*n) || !n->parentNode() || !n->parentNode()->hasEditableStyle() || isElementForFormatBlock(n))
             return n;
-        if (isBlock(n))
+        if (isEnclosingBlock(n))
             lastBlock = n;
         if (isHTMLListElement(n))
             return n->parentNode()->hasEditableStyle() ? n->parentNode() : n;