Refactoring: Introduce StyledMarkupSerializer::shouldAnnotate()

Source/core/editing/StyledMarkupSerializer.h

Index: Source/core/editing/StyledMarkupSerializer.h
diff --git a/Source/core/editing/StyledMarkupSerializer.h b/Source/core/editing/StyledMarkupSerializer.h
index 78460b57fd5a6c9a05e034a2b93a69388b130aa7..799a0cbe61df4d0a3ee6439f83607d358e189f23 100644
--- a/Source/core/editing/StyledMarkupSerializer.h
+++ b/Source/core/editing/StyledMarkupSerializer.h
@@ -51,6 +51,7 @@ public:
 
 private:
     bool convertBlocksToInlines() const { return m_convertBlocksToInlines == ConvertBlocksToInlines::Convert; }
+    bool shouldAnnotate() const { return m_shouldAnnotate == AnnotateForInterchange; }
     Node* serializeNodes(Node* startNode, Node* pastEnd, StyledMarkupAccumulator*);
     Node* traverseNodesForSerialization(Node* startNode, Node* pastEnd, StyledMarkupAccumulator*);
     void wrapWithNode(StyledMarkupAccumulator&, ContainerNode&, PassRefPtrWillBeRawPtr<EditingStyle>);