Include-what-you-use for WrapUnique/MakeUnique.

chrome/browser/prefs/preferences_manager_unittest.cc

 // Copyright 2016 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/prefs/preferences_manager.h"
 
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/prefs/browser_prefs.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_profile.h"
 #include "chrome/test/base/testing_profile_manager.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/prefs/pref_change_registrar.h"
 #include "components/prefs/pref_service.h"
@@ skipping 279 matching lines @@
   std::unique_ptr<base::DictionaryValue> dictionary =
       base::MakeUnique<base::DictionaryValue>();
   dictionary->SetInteger(kKey, kNewValue);
   SetPreferences(std::move(dictionary));
 
   EXPECT_FALSE(observer()->on_preferences_changed_called());
   EXPECT_EQ(kNewValue, service()->GetInteger(kKey));
 }
 
 }  // namespace test