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

src/location.h

-// Copyright 2009 the V8 project authors. All rights reserved.
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-// modification, are permitted provided that the following conditions are
-// met:
-//
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-
-#ifndef V8_LOCATION_H_
-#define V8_LOCATION_H_
-
-#include "utils.h"
-
-namespace v8 {
-namespace internal {
-
-class Location BASE_EMBEDDED {
- public:
-  enum Type {
-    kUninitialized,
-    kEffect,
-    kValue
-  };
-
-  static Location Uninitialized() { return Location(kUninitialized); }
-  static Location Effect() { return Location(kEffect); }
-  static Location Value() { return Location(kValue); }
-
-  bool is_effect() { return type_ == kEffect; }
-  bool is_value() { return type_ == kValue; }
-
-  Type type() { return type_; }
-
- private:
-  explicit Location(Type type) : type_(type) {}
-
-  Type type_;
-};
-
-
-} }  // namespace v8::internal
-
-#endif  // V8_LOCATION_H_