Move the Location class into the AST Expression class as a member....

src/fast-codegen.h

Index: src/fast-codegen.h
===================================================================
--- src/fast-codegen.h	(revision 3175)
+++ src/fast-codegen.h	(working copy)
@@ -51,16 +51,13 @@
  private:
   int SlotOffset(Slot* slot);
 
-  void Move(Location destination, Register source);
-  void Move(Location destination, Slot* source);
-  void Move(Location destination, Literal* source);
+  void Move(Expression::Context destination, Register source);
+  void Move(Expression::Context destination, Slot* source);
+  void Move(Expression::Context destination, Literal* source);
 
-  void Move(Register destination, Location source);
-  void Move(Slot* destination, Location source);
-
   // Drop the TOS, and store source to destination.
   // If destination is TOS, just overwrite TOS with source.
-  void DropAndMove(Location destination, Register source);
+  void DropAndMove(Expression::Context destination, Register source);
 
   void VisitDeclarations(ZoneList<Declaration*>* declarations);
   Handle<JSFunction> BuildBoilerplate(FunctionLiteral* fun);