Use tighter typing in editing/

Source/core/editing/IndentOutdentCommand.h

Index: Source/core/editing/IndentOutdentCommand.h
diff --git a/Source/core/editing/IndentOutdentCommand.h b/Source/core/editing/IndentOutdentCommand.h
index 0432eb1629c4ee892fe583aaf7bc6165a44c8d61..9adeab92f0222d4e573f769fefaaba62d7d1ceb2 100644
--- a/Source/core/editing/IndentOutdentCommand.h
+++ b/Source/core/editing/IndentOutdentCommand.h
@@ -49,10 +49,10 @@ private:
     void outdentRegion(const VisiblePosition&, const VisiblePosition&);
     void outdentParagraph();
     bool tryIndentingAsListItem(const Position&, const Position&);
-    void indentIntoBlockquote(const Position&, const Position&, RefPtrWillBeRawPtr<Element>&);
+    void indentIntoBlockquote(const Position&, const Position&, RefPtrWillBeRawPtr<HTMLElement>&);
 
     virtual void formatSelection(const VisiblePosition& startOfSelection, const VisiblePosition& endOfSelection) OVERRIDE;
-    virtual void formatRange(const Position& start, const Position& end, const Position& endOfSelection, RefPtrWillBeRawPtr<Element>& blockquoteForNextIndent) OVERRIDE;
+    virtual void formatRange(const Position& start, const Position& end, const Position& endOfSelection, RefPtrWillBeRawPtr<HTMLElement>& blockquoteForNextIndent) OVERRIDE;
 
     EIndentType m_typeOfAction;
 };