Don't use a scoped_refptr for StringVar::FromPPVar

ppapi/shared_impl/var.h

 // Copyright (c) 2011 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.
 
 #ifndef PPAPI_SHARED_IMPL_VAR_H_
 #define PPAPI_SHARED_IMPL_VAR_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 66 matching lines @@
 };
 
 // StringVar -------------------------------------------------------------------
 
 // Represents a string-based Var.
 //
 // Returning a given string as a PP_Var:
 //   return StringVar::StringToPPVar(module, my_string);
 //
 // Converting a PP_Var to a string:
-//   scoped_refptr<StringVar> string(StringVar::FromPPVar(var));
+//   StringVar* string = StringVar::FromPPVar(var);
 //   if (!string)
 //     return false;  // Not a string or an invalid var.
 //   DoSomethingWithTheString(string->value());
 class StringVar : public Var {
  public:
   StringVar(PP_Module module, const char* str, uint32 len);
   virtual ~StringVar();
 
   const std::string& value() const { return value_; }
 
   // Var override.
   virtual StringVar* AsStringVar() OVERRIDE;
   virtual PP_Var GetPPVar() OVERRIDE;
   virtual PP_VarType GetType() const OVERRIDE;
 
   // Helper function to create a PP_Var of type string that contains a copy of
   // the given string. The input data must be valid UTF-8 encoded text, if it
   // is not valid UTF-8, a NULL var will be returned.
   //
   // The return value will have a reference count of 1. Internally, this will
   // create a StringVar, associate it with a module, and return the reference
   // to it in the var.
   static PP_Var StringToPPVar(PP_Module module, const std::string& str);
   static PP_Var StringToPPVar(PP_Module module, const char* str, uint32 len);
 
   // Helper function that converts a PP_Var to a string. This will return NULL
   // if the PP_Var is not of string type or the string is invalid.
-  static scoped_refptr<StringVar> FromPPVar(PP_Var var);
+  static StringVar* FromPPVar(PP_Var var);
 
  private:
   std::string value_;
 
   DISALLOW_COPY_AND_ASSIGN(StringVar);
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_VAR_H_