Change PopDataAsValue to return a std::unique_ptr.

dbus/values_util.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.
 
 #ifndef DBUS_VALUES_UTIL_H_
 #define DBUS_VALUES_UTIL_H_
 
 #include <stdint.h>
 
+#include <memory>
+
 #include "dbus/dbus_export.h"
 
 namespace base {
 class Value;
 }
 
 namespace dbus {
 
 class MessageReader;
 class MessageWriter;
 
 // Pops a value from |reader| as a base::Value.
 // Returns NULL if an error occurs.
 // Note: Integer values larger than int32_t (including uint32_t) are converted
 // to double.  Non-string dictionary keys are converted to strings.
-CHROME_DBUS_EXPORT base::Value* PopDataAsValue(MessageReader* reader);
+CHROME_DBUS_EXPORT std::unique_ptr<base::Value> PopDataAsValue(
+    MessageReader* reader);
 
 // Appends a basic type value to |writer|. Basic types are BOOLEAN, INTEGER,
 // DOUBLE, and STRING. Use this function for values that are known to be basic
 // types and to handle basic type members of collections that should not
 // have type "a{sv}" or "av". Otherwise, use AppendValueData.
 CHROME_DBUS_EXPORT void AppendBasicTypeValueData(MessageWriter* writer,
                                                  const base::Value& value);
 
 // Appends a basic type value to |writer| as a variant. Basic types are BOOLEAN,
 // INTEGER, DOUBLE, and STRING. Use this function for values that are known to
@@ skipping 15 matching lines @@
 // as a collection type, such as dictionary or list. Collections will be
 // recursively written as variant containers, i.e. dictionaries will be written
 // with type a{sv} and lists with type av. Any sub-dictionaries or sub-lists
 // will also have these types.
 CHROME_DBUS_EXPORT void AppendValueDataAsVariant(MessageWriter* writer,
                                                  const base::Value& value);
 
 }  // namespace dbus
 
 #endif  // DBUS_VALUES_UTIL_H_