Fix auto raw pointer deduction on linux

components/search_engines/default_search_policy_handler_unittest.cc

 // 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.
 
 #include "components/search_engines/default_search_policy_handler.h"
 
 #include <memory>
 
 #include "base/memory/ptr_util.h"
 #include "components/policy/core/browser/configuration_policy_pref_store.h"
@@ skipping 149 matching lines @@
       key::kDefaultSearchProviderEncodings,
       key::kDefaultSearchProviderAlternateURLs,
       key::kDefaultSearchProviderSearchTermsReplacementKey,
       key::kDefaultSearchProviderImageURL,
       key::kDefaultSearchProviderNewTabURL,
       key::kDefaultSearchProviderImageURLPostParams};
 
   PolicyMap policy;
   BuildDefaultSearchPolicy(&policy);
 
-  for (auto policy_name : kPolicyNamesToCheck) {
+  for (auto* policy_name : kPolicyNamesToCheck) {
     // Check that policy can be successfully applied first.
     UpdateProviderPolicy(policy);
     const base::Value* temp = nullptr;
     EXPECT_TRUE(store_->GetValue(
         DefaultSearchManager::kDefaultSearchProviderDataPrefName, &temp));
 
     auto old_value = base::WrapUnique(policy.GetValue(policy_name)->DeepCopy());
     // BinaryValue is not supported in any current default search policy params.
     // Try changing policy param to BinaryValue and check that policy becomes
     // invalid.
@@ skipping 175 matching lines @@
 
   EXPECT_TRUE(dictionary->GetString(DefaultSearchManager::kURL, &value));
   EXPECT_EQ(kFileSearchURL, value);
   EXPECT_TRUE(dictionary->GetString(DefaultSearchManager::kShortName, &value));
   EXPECT_EQ("_", value);
   EXPECT_TRUE(dictionary->GetString(DefaultSearchManager::kKeyword, &value));
   EXPECT_EQ("_", value);
 }
 
 }  // namespace policy