Convert //components/prefs from scoped_ptr to std::unique_ptr

components/prefs/pref_service_factory.cc

Index: components/prefs/pref_service_factory.cc
diff --git a/components/prefs/pref_service_factory.cc b/components/prefs/pref_service_factory.cc
index 663695da98895e0b18f7bd4297fc261e71bff5eb..7b21ae0f164c71c341b5fb9cda99632bce47f33c 100644
--- a/components/prefs/pref_service_factory.cc
+++ b/components/prefs/pref_service_factory.cc
@@ -36,26 +36,19 @@ PrefServiceFactory::~PrefServiceFactory() {}
 void PrefServiceFactory::SetUserPrefsFile(
     const base::FilePath& prefs_file,
     base::SequencedTaskRunner* task_runner) {
-  user_prefs_ = new JsonPrefStore(
-      prefs_file, task_runner, scoped_ptr<PrefFilter>());
+  user_prefs_ =
+      new JsonPrefStore(prefs_file, task_runner, std::unique_ptr<PrefFilter>());
 }
 
-scoped_ptr<PrefService> PrefServiceFactory::Create(
+std::unique_ptr<PrefService> PrefServiceFactory::Create(
     PrefRegistry* pref_registry) {
   PrefNotifierImpl* pref_notifier = new PrefNotifierImpl();
-  scoped_ptr<PrefService> pref_service(
-      new PrefService(pref_notifier,
-                      new PrefValueStore(managed_prefs_.get(),
-                                         supervised_user_prefs_.get(),
-                                         extension_prefs_.get(),
-                                         command_line_prefs_.get(),
-                                         user_prefs_.get(),
-                                         recommended_prefs_.get(),
-                                         pref_registry->defaults().get(),
-                                         pref_notifier),
-                      user_prefs_.get(),
-                      pref_registry,
-                      read_error_callback_,
-                      async_));
+  std::unique_ptr<PrefService> pref_service(new PrefService(
+      pref_notifier,
+      new PrefValueStore(managed_prefs_.get(), supervised_user_prefs_.get(),
+                         extension_prefs_.get(), command_line_prefs_.get(),
+                         user_prefs_.get(), recommended_prefs_.get(),
+                         pref_registry->defaults().get(), pref_notifier),
+      user_prefs_.get(), pref_registry, read_error_callback_, async_));
   return pref_service;
 }