Convert Pass()→std::move() in //components/[n-z]*

components/search_engines/default_search_pref_migration.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_pref_migration.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
@@ skipping 80 matching lines @@
   }
 
   std::string prepopulate_id =
       prefs->GetString(prefs::kDefaultSearchProviderPrepopulateID);
   if (!prepopulate_id.empty()) {
     int value;
     base::StringToInt(prepopulate_id, &value);
     default_provider_data->prepopulate_id = value;
   }
 
-  return default_provider_data.Pass();
+  return default_provider_data;
 }
 
 void ClearDefaultSearchProviderFromLegacyPrefs(PrefService* prefs) {
   prefs->ClearPref(prefs::kDefaultSearchProviderName);
   prefs->ClearPref(prefs::kDefaultSearchProviderKeyword);
   prefs->ClearPref(prefs::kDefaultSearchProviderSearchURL);
   prefs->ClearPref(prefs::kDefaultSearchProviderSuggestURL);
   prefs->ClearPref(prefs::kDefaultSearchProviderInstantURL);
   prefs->ClearPref(prefs::kDefaultSearchProviderImageURL);
   prefs->ClearPref(prefs::kDefaultSearchProviderNewTabURL);
@@ skipping 48 matching lines @@
 void ConfigureDefaultSearchPrefMigrationToDictionaryValue(
     PrefService* pref_service) {
   if (pref_service->GetInitializationStatus() ==
       PrefService::INITIALIZATION_STATUS_WAITING) {
     pref_service->AddPrefInitObserver(
         base::Bind(&OnPrefsInitialized, base::Unretained(pref_service)));
   } else {
     MigrateDefaultSearchPref(pref_service);
   }
 }