Initialize source field of PolicyMap::Entry

components/policy/core/common/policy_map.h

 // 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.
 
 #ifndef COMPONENTS_POLICY_CORE_COMMON_POLICY_MAP_H_
 #define COMPONENTS_POLICY_CORE_COMMON_POLICY_MAP_H_
 
 #include <stddef.h>
 
 #include <map>
 #include <memory>
 #include <set>
 #include <string>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/values.h"
 #include "components/policy/core/common/external_data_fetcher.h"
 #include "components/policy/core/common/policy_types.h"
 #include "components/policy/policy_export.h"
 
 namespace policy {
 
 // A mapping of policy names to policy values for a given policy namespace.
 class POLICY_EXPORT PolicyMap {
  public:
   // Each policy maps to an Entry which keeps the policy value as well as other
   // relevant data about the policy.
   struct POLICY_EXPORT Entry {
-    PolicyLevel level;
-    PolicyScope scope;
+    PolicyLevel level = POLICY_LEVEL_RECOMMENDED;
+    PolicyScope scope = POLICY_SCOPE_USER;
     std::unique_ptr<base::Value> value;
     std::unique_ptr<ExternalDataFetcher> external_data_fetcher;
 
     // For debugging and displaying only. Set by provider delivering the policy.
-    PolicySource source;
+    PolicySource source = POLICY_SOURCE_ENTERPRISE_DEFAULT;
 
     Entry();
     ~Entry();
 
     Entry(Entry&&);
     Entry& operator=(Entry&&);
 
     // Returns a copy of |this|.
     Entry DeepCopy() const;
 
@@ skipping 90 matching lines @@
                    bool deletion_value);
 
   PolicyMapType map_;
 
   DISALLOW_COPY_AND_ASSIGN(PolicyMap);
 };
 
 }  // namespace policy
 
 #endif  // COMPONENTS_POLICY_CORE_COMMON_POLICY_MAP_H_