base::ListValue::Append cleanup: pass unique_ptr instead of the released pointer.

extensions/common/permissions/set_disjunction_permission.h

 // Copyright 2014 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 EXTENSIONS_COMMON_PERMISSIONS_SET_DISJUNCTION_PERMISSION_H_
 #define EXTENSIONS_COMMON_PERMISSIONS_SET_DISJUNCTION_PERMISSION_H_
 
 #include <stddef.h>
 
 #include <memory>
 #include <set>
 #include <string>
+#include <utility>
 
 #include "base/json/json_writer.h"
 #include "base/values.h"
 #include "extensions/common/extension_messages.h"
 #include "extensions/common/permissions/api_permission.h"
 #include "ipc/ipc_message.h"
 #include "ipc/ipc_message_utils.h"
 
 namespace extensions {
 
@@ skipping 117 matching lines @@
       }
     }
     return true;
   }
 
   std::unique_ptr<base::Value> ToValue() const override {
     base::ListValue* list = new base::ListValue();
     typename std::set<PermissionDataType>::const_iterator i;
     for (i = data_set_.begin(); i != data_set_.end(); ++i) {
       std::unique_ptr<base::Value> item_value(i->ToValue());
-      list->Append(item_value.release());
+      list->Append(std::move(item_value));
     }
     return std::unique_ptr<base::Value>(list);
   }
 
   void GetSize(base::PickleSizer* s) const override {
     IPC::GetParamSize(s, data_set_);
   }
 
   void Write(base::Pickle* m) const override { IPC::WriteParam(m, data_set_); }
 
   bool Read(const base::Pickle* m, base::PickleIterator* iter) override {
     return IPC::ReadParam(m, iter, &data_set_);
   }
 
   void Log(std::string* log) const override {
     IPC::LogParam(data_set_, log);
   }
 
  protected:
   std::set<PermissionDataType> data_set_;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_PERMISSIONS_SET_DISJUNCTION_PERMISSION_H_