Remove base::StringValue

base/values.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file specifies a recursive data storage class called Value intended for
 // storing settings and other persistable data.
 //
 // A Value represents something that can be stored in JSON or passed to/from
 // JavaScript. As such, it is NOT a generalized variant type, since only the
 // types supported by JavaScript/JSON are supported.
@@ skipping 21 matching lines @@
 #include "base/macros.h"
 #include "base/memory/manual_constructor.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_piece.h"
 
 namespace base {
 
 class DictionaryValue;
 class ListValue;
 class Value;
-using StringValue = Value;
 using BinaryValue = Value;
 
 // The Value class is the base class for Values. A Value can be instantiated
 // via the Create*Value() factory methods, or by directly creating instances of
 // the subclasses.
 //
 // See the file-level comment above for more information.
 class BASE_EXPORT Value {
  public:
   using DictStorage = std::map<std::string, std::unique_ptr<Value>>;
@@ skipping 83 matching lines @@
 
   // These methods allow the convenient retrieval of the contents of the Value.
   // If the current object can be converted into the given type, the value is
   // returned through the |out_value| parameter and true is returned;
   // otherwise, false is returned and |out_value| is unchanged.
   bool GetAsBoolean(bool* out_value) const;
   bool GetAsInteger(int* out_value) const;
   bool GetAsDouble(double* out_value) const;
   bool GetAsString(std::string* out_value) const;
   bool GetAsString(string16* out_value) const;
-  bool GetAsString(const StringValue** out_value) const;
+  bool GetAsString(const Value** out_value) const;
   bool GetAsString(StringPiece* out_value) const;
   bool GetAsBinary(const BinaryValue** out_value) const;
   // ListValue::From is the equivalent for std::unique_ptr conversions.
   bool GetAsList(ListValue** out_value);
   bool GetAsList(const ListValue** out_value) const;
   // DictionaryValue::From is the equivalent for std::unique_ptr conversions.
   bool GetAsDictionary(DictionaryValue** out_value);
   bool GetAsDictionary(const DictionaryValue** out_value) const;
   // Note: Do not add more types. See the file-level comment above for why.
 
@@ skipping 358 matching lines @@
   return out << static_cast<const Value&>(value);
 }
 
 // Stream operator so that enum class Types can be used in log statements.
 BASE_EXPORT std::ostream& operator<<(std::ostream& out,
                                      const Value::Type& type);
 
 }  // namespace base
 
 #endif  // BASE_VALUES_H_