Convert Pass()→std::move() in //chrome

chrome/browser/download/download_test_file_activity_observer.cc

 // Copyright (c) 2012 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 "chrome/browser/download/download_test_file_activity_observer.h"
 
+#include <utility>
+
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "chrome/browser/download/chrome_download_manager_delegate.h"
 #include "chrome/browser/download/download_service.h"
 #include "chrome/browser/download/download_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
 
 namespace content {
@@ skipping 51 matching lines @@
   bool file_chooser_displayed_;
   base::WeakPtrFactory<MockDownloadManagerDelegate> weak_ptr_factory_;
 };
 
 DownloadTestFileActivityObserver::DownloadTestFileActivityObserver(
     Profile* profile) {
   scoped_ptr<MockDownloadManagerDelegate> mock_delegate(
       new MockDownloadManagerDelegate(profile));
   test_delegate_ = mock_delegate->GetWeakPtr();
   DownloadServiceFactory::GetForBrowserContext(profile)
-      ->SetDownloadManagerDelegateForTesting(mock_delegate.Pass());
+      ->SetDownloadManagerDelegateForTesting(std::move(mock_delegate));
 }
 
 DownloadTestFileActivityObserver::~DownloadTestFileActivityObserver() {
 }
 
 void DownloadTestFileActivityObserver::EnableFileChooser(bool enable) {
   if (test_delegate_.get())
     test_delegate_->EnableFileChooser(enable);
 }
 
 bool DownloadTestFileActivityObserver::TestAndResetDidShowFileChooser() {
   return test_delegate_.get() &&
       test_delegate_->TestAndResetDidShowFileChooser();
 }