Remove mail blockquote special case handling.

Source/WebCore/editing/CompositeEditCommand.h

Index: Source/WebCore/editing/CompositeEditCommand.h
diff --git a/Source/WebCore/editing/CompositeEditCommand.h b/Source/WebCore/editing/CompositeEditCommand.h
index 4c8c0b19b65a9a2c9d5eff9a95dfba0f01b3ee32..e7bad4c46425896ebdc873bc7652d2b0dc07b51f 100644
--- a/Source/WebCore/editing/CompositeEditCommand.h
+++ b/Source/WebCore/editing/CompositeEditCommand.h
@@ -109,7 +109,7 @@ protected:
     void insertNodeAt(PassRefPtr<Node>, const Position&);
     void insertNodeAtTabSpanPosition(PassRefPtr<Node>, const Position&);
     void insertNodeBefore(PassRefPtr<Node>, PassRefPtr<Node> refChild, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable);
-    void insertParagraphSeparator(bool useDefaultParagraphElement = false, bool pasteBlockqutoeIntoUnquotedArea = false);
+    void insertParagraphSeparator(bool useDefaultParagraphElement = false);
     void insertLineBreak();
     void insertTextIntoNode(PassRefPtr<Text>, unsigned offset, const String& text);
     void mergeIdenticalElements(PassRefPtr<Element>, PassRefPtr<Element>);
@@ -161,7 +161,6 @@ protected:
     void cleanupAfterDeletion(VisiblePosition destination = VisiblePosition());
     
     bool breakOutOfEmptyListItem();
-    bool breakOutOfEmptyMailBlockquotedParagraph();
     
     Position positionAvoidingSpecialElementBoundary(const Position&);