Convert JsonWriter::Write to taking a const ref for the in-param

dbus/values_util.cc

 // 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.
 
 #include "dbus/values_util.h"
 
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
@@ skipping 30 matching lines @@
       return false;
     // Get key as a string.
     std::string key_string;
     if (entry_reader.GetDataType() == Message::STRING) {
       // If the type of keys is STRING, pop it directly.
       if (!entry_reader.PopString(&key_string))
         return false;
     } else {
       // If the type of keys is not STRING, convert it to string.
       scoped_ptr<base::Value> key(PopDataAsValue(&entry_reader));
-      if (!key.get())
+      if (!key)
         return false;
       // Use JSONWriter to convert an arbitrary value to a string.
-      base::JSONWriter::Write(key.get(), &key_string);
+      base::JSONWriter::Write(*key, &key_string);
     }
     // Get the value and set the key-value pair.
     base::Value* value = PopDataAsValue(&entry_reader);
     if (!value)
       return false;
     dictionary_value->SetWithoutPathExpansion(key_string, value);
   }
   return true;
 }
 
@@ skipping 233 matching lines @@
 }
 
 void AppendValueDataAsVariant(MessageWriter* writer, const base::Value& value) {
   MessageWriter variant_writer(NULL);
   writer->OpenVariant(GetTypeSignature(value), &variant_writer);
   AppendValueData(&variant_writer, value);
   writer->CloseContainer(&variant_writer);
 }
 
 }  // namespace dbus