Use std::unique_ptr for base::DictionaryValue and base::ListValue's internal store.

chrome/browser/chromeos/platform_keys/key_permissions.cc

 // 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.
 
 #include "chrome/browser/chromeos/platform_keys/key_permissions.h"
 
 #include <utility>
 
 #include "base/base64.h"
 #include "base/bind.h"
@@ skipping 228 matching lines @@
 
 void KeyPermissions::PermissionsForExtension::KeyEntriesFromState(
     const base::Value& state) {
   state_store_entries_.clear();
 
   const base::ListValue* entries = nullptr;
   if (!state.GetAsList(&entries)) {
     LOG(ERROR) << "Found a state store of wrong type.";
     return;
   }
-  for (const base::Value* entry : *entries) {
+  for (const auto& entry : *entries) {
     if (!entry) {
       LOG(ERROR) << "Found invalid NULL entry in PlatformKeys state store.";
       continue;
     }
 
     std::string spki_b64;
     const base::DictionaryValue* dict_entry = nullptr;
     if (entry->GetAsString(&spki_b64)) {
       // This handles the case that the store contained a plain list of base64
       // and DER-encoded SPKIs from an older version of ChromeOS.
@@ skipping 134 matching lines @@
   const base::DictionaryValue* platform_keys =
       profile_prefs_->GetDictionary(prefs::kPlatformKeys);
 
   const base::DictionaryValue* key_entry = nullptr;
   platform_keys->GetDictionaryWithoutPathExpansion(public_key_spki_der_b64,
                                                    &key_entry);
   return key_entry;
 }
 
 }  // namespace chromeos