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

ios/web/public/web_controller_factory.mm

 // 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.
 
 #import "ios/web/public/web_controller_factory.h"
 
+#include <utility>
+
 #include "ios/web/public/browser_state.h"
 #import "ios/web/web_state/ui/crw_ui_web_view_web_controller.h"
 #import "ios/web/web_state/ui/crw_wk_web_view_web_controller.h"
 #include "ios/web/web_state/web_state_impl.h"
 
 namespace web {
 
 CRWWebController* CreateWebController(WebViewType web_view_type,
                                       scoped_ptr<WebStateImpl> web_state) {
   switch (web_view_type) {
     case UI_WEB_VIEW_TYPE:
-      return
-          [[CRWUIWebViewWebController alloc] initWithWebState:web_state.Pass()];
+      return [[CRWUIWebViewWebController alloc]
+          initWithWebState:std::move(web_state)];
     case WK_WEB_VIEW_TYPE:
-      return
-          [[CRWWKWebViewWebController alloc] initWithWebState:web_state.Pass()];
+      return [[CRWWKWebViewWebController alloc]
+          initWithWebState:std::move(web_state)];
   }
   NOTREACHED();
   return nil;
 }
 
 CRWWebController* CreateWebController(WebViewType web_view_type,
                                       BrowserState* browser_state) {
   DCHECK(browser_state);
   scoped_ptr<web::WebStateImpl> web_state(new web::WebStateImpl(browser_state));
   web_state->GetNavigationManagerImpl().InitializeSession(nil, nil, NO, -1);
-  return CreateWebController(web_view_type, web_state.Pass());
+  return CreateWebController(web_view_type, std::move(web_state));
 }
 
 }  // namespace web