Convert Pass()→std::move() for iOS build.

ios/chrome/browser/sync/ios_chrome_sync_client.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 "ios/chrome/browser/sync/ios_chrome_sync_client.h"
 
+#include <utility>
+
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "components/autofill/core/browser/webdata/autocomplete_syncable_service.h"
 #include "components/autofill/core/browser/webdata/autofill_profile_syncable_service.h"
 #include "components/autofill/core/browser/webdata/autofill_wallet_metadata_syncable_service.h"
 #include "components/autofill/core/browser/webdata/autofill_wallet_syncable_service.h"
 #include "components/autofill/core/browser/webdata/autofill_webdata_service.h"
 #include "components/browser_sync/browser/profile_sync_components_factory_impl.h"
 #include "components/browser_sync/browser/profile_sync_service.h"
@@ skipping 353 matching lines @@
   return component_factory_.get();
 }
 
 void IOSChromeSyncClient::ClearBrowsingData(base::Time start, base::Time end) {
   // This method should never be called on iOS.
   NOTREACHED();
 }
 
 void IOSChromeSyncClient::SetSyncApiComponentFactoryForTesting(
     scoped_ptr<sync_driver::SyncApiComponentFactory> component_factory) {
-  component_factory_ = component_factory.Pass();
+  component_factory_ = std::move(component_factory);
 }