Initialize source field of PolicyMap::Entry

components/policy/core/common/policy_map.cc

 // Copyright 2013 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 "components/policy/core/common/policy_map.h"
 
 #include <algorithm>
 
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
 #include "base/stl_util.h"
 
 namespace policy {
 
-PolicyMap::Entry::Entry()
-    : level(POLICY_LEVEL_RECOMMENDED), scope(POLICY_SCOPE_USER) {}
+PolicyMap::Entry::Entry() = default;
 
 PolicyMap::Entry::~Entry() = default;
 
 PolicyMap::Entry::Entry(Entry&&) = default;
 
 PolicyMap::Entry& PolicyMap::Entry::operator=(Entry&&) = default;
 
 PolicyMap::Entry PolicyMap::Entry::DeepCopy() const {
   Entry copy;
   copy.level = level;
@@ skipping 186 matching lines @@
   while (iter != map_.end()) {
     if (filter.Run(iter) == deletion_value) {
       map_.erase(iter++);
     } else {
       ++iter;
     }
   }
 }
 
 }  // namespace policy