Stop deleting ObjectProxy::OnPendingCallIsCompleteData manually

dbus/util.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 DBUS_UTIL_H_
 #define DBUS_UTIL_H_
 
 #include <string>
 
 #include "dbus/dbus_export.h"
 
 namespace dbus {
 
 // Returns the absolute name of a member by concatanating |interface_name| and
 // |member_name|. e.g.:
 //    GetAbsoluteMemberName(
 //        "org.freedesktop.DBus.Properties",
 //        "PropertiesChanged")
 //
 //    => "org.freedesktop.DBus.Properties.PropertiesChanged"
 //
 CHROME_DBUS_EXPORT std::string GetAbsoluteMemberName(
     const std::string& interface_name,
     const std::string& member_name);
 
+// Similar to base::DeletePointer, but takes void* as an argument.
+// Used as DBusFreeFunction.
+template<typename T>
+void DeleteVoidPointer(void* memory) {
+  delete static_cast<T*>(memory);
+}
+
 }  // namespace dbus
 
 #endif  // DBUS_UTIL_H_