Convert //chromecast from scoped_ptr to std::unique_ptr

chromecast/base/serializers.h

 // Copyright 2015 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 CHROMECAST_BASE_SERIALIZERS_H_
 #define CHROMECAST_BASE_SERIALIZERS_H_
 
+#include <memory>
 #include <string>
 
-#include "base/memory/scoped_ptr.h"
 
 namespace base {
 class Value;
 class FilePath;
 }
 
 namespace chromecast {
 
 // Helper function which deserializes JSON |text| into a base::Value. If |text|
 // is empty, is not valid JSON, or if some other deserialization error occurs,
 // the return value will hold the NULL pointer.
-scoped_ptr<base::Value> DeserializeFromJson(const std::string& text);
+std::unique_ptr<base::Value> DeserializeFromJson(const std::string& text);
 
 // Helper function which serializes |value| into a JSON string. If a
 // serialization error occurs,the return value will hold the NULL pointer.
-scoped_ptr<std::string> SerializeToJson(const base::Value& value);
+std::unique_ptr<std::string> SerializeToJson(const base::Value& value);
 
 // Helper function which deserializes JSON file at |path| into a base::Value.
 // If file in |path| is empty, is not valid JSON, or if some other
 // deserialization error occurs, the return value will hold the NULL pointer.
-scoped_ptr<base::Value> DeserializeJsonFromFile(const base::FilePath& path);
+std::unique_ptr<base::Value> DeserializeJsonFromFile(
+    const base::FilePath& path);
 
 // Helper function which serializes |value| into the file at |path|. The
 // function returns true on success, false otherwise.
 bool SerializeJsonToFile(const base::FilePath& path, const base::Value& value);
 
 }  // namespace chromecast
 
 #endif  // CHROMECAST_BASE_SERIALIZERS_H_