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

components/sessions/ios/ios_serialized_navigation_builder.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/sessions/ios/ios_serialized_navigation_builder.h"
 
 #include "components/sessions/core/serialized_navigation_entry.h"
 #include "ios/web/public/favicon_status.h"
 #include "ios/web/public/navigation_item.h"
 #include "ios/web/public/referrer.h"
@@ skipping 30 matching lines @@
       navigation->referrer_url_,
       static_cast<web::ReferrerPolicy>(navigation->referrer_policy_)));
   item->SetTitle(navigation->title_);
   item->SetTransitionType(ui::PAGE_TRANSITION_RELOAD);
   item->SetTimestamp(navigation->timestamp_);
 
   if (navigation->favicon_url_.is_valid()) {
     item->GetFavicon().url = navigation->favicon_url_;
   }
 
-  return item.Pass();
+  return item;
 }
 
 // static
 ScopedVector<web::NavigationItem>
 IOSSerializedNavigationBuilder::ToNavigationItems(
     const std::vector<SerializedNavigationEntry>& navigations) {
   ScopedVector<web::NavigationItem> items;
   for (std::vector<SerializedNavigationEntry>::const_iterator it =
            navigations.begin();
        it != navigations.end(); ++it) {
     items.push_back(ToNavigationItem(&(*it)).release());
   }
-  return items.Pass();
+  return items;
 }
 
 }  // namespace sessions