Have EditCommand classes deal with Document references, not pointers

Source/core/editing/ApplyStyleCommand.h

Index: Source/core/editing/ApplyStyleCommand.h
diff --git a/Source/core/editing/ApplyStyleCommand.h b/Source/core/editing/ApplyStyleCommand.h
index 99d3490c57149c3496c8204062ed3dcc4dc07c03..46ed5b977afb30f47e2da5de0108de85da2e0250 100644
--- a/Source/core/editing/ApplyStyleCommand.h
+++ b/Source/core/editing/ApplyStyleCommand.h
@@ -48,11 +48,11 @@ public:
     enum EAddStyledElement { AddStyledElement, DoNotAddStyledElement };
     typedef bool (*IsInlineElementToRemoveFunction)(const Element*);
 
-    static PassRefPtr<ApplyStyleCommand> create(Document* document, const EditingStyle* style, EditAction action = EditActionChangeAttributes, EPropertyLevel level = PropertyDefault)
+    static PassRefPtr<ApplyStyleCommand> create(Document& document, const EditingStyle* style, EditAction action = EditActionChangeAttributes, EPropertyLevel level = PropertyDefault)
     {
         return adoptRef(new ApplyStyleCommand(document, style, action, level));
     }
-    static PassRefPtr<ApplyStyleCommand> create(Document* document, const EditingStyle* style, const Position& start, const Position& end, EditAction action = EditActionChangeAttributes, EPropertyLevel level = PropertyDefault)
+    static PassRefPtr<ApplyStyleCommand> create(Document& document, const EditingStyle* style, const Position& start, const Position& end, EditAction action = EditActionChangeAttributes, EPropertyLevel level = PropertyDefault)
     {
         return adoptRef(new ApplyStyleCommand(document, style, start, end, action, level));
     }
@@ -60,16 +60,16 @@ public:
     {
         return adoptRef(new ApplyStyleCommand(element, removeOnly, action));
     }
-    static PassRefPtr<ApplyStyleCommand> create(Document* document, const EditingStyle* style, IsInlineElementToRemoveFunction isInlineElementToRemoveFunction, EditAction action = EditActionChangeAttributes)
+    static PassRefPtr<ApplyStyleCommand> create(Document& document, const EditingStyle* style, IsInlineElementToRemoveFunction isInlineElementToRemoveFunction, EditAction action = EditActionChangeAttributes)
     {
         return adoptRef(new ApplyStyleCommand(document, style, isInlineElementToRemoveFunction, action));
     }
 
 private:
-    ApplyStyleCommand(Document*, const EditingStyle*, EditAction, EPropertyLevel);
-    ApplyStyleCommand(Document*, const EditingStyle*, const Position& start, const Position& end, EditAction, EPropertyLevel);
+    ApplyStyleCommand(Document&, const EditingStyle*, EditAction, EPropertyLevel);
+    ApplyStyleCommand(Document&, const EditingStyle*, const Position& start, const Position& end, EditAction, EPropertyLevel);
     ApplyStyleCommand(PassRefPtr<Element>, bool removeOnly, EditAction);
-    ApplyStyleCommand(Document*, const EditingStyle*, bool (*isInlineElementToRemove)(const Element*), EditAction);
+    ApplyStyleCommand(Document&, const EditingStyle*, bool (*isInlineElementToRemove)(const Element*), EditAction);
 
     virtual void doApply();
     virtual EditAction editingAction() const;