Convert WindowOpenDisposition to an enum class.

chrome/browser/download/save_page_browsertest.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 <stddef.h>
 #include <stdint.h>
 #include <string>
 #include <utility>
 #include <vector>
 
@@ skipping 561 matching lines @@
   // Open an Incognito window.
   Browser* incognito = CreateIncognitoBrowser();  // Waits.
   ASSERT_TRUE(incognito);
 
   // Create a download item creation waiter on that window.
   DownloadItemCreatedObserver creation_observer(
       BrowserContext::GetDownloadManager(incognito->profile()));
 
   // Navigate, unblocking with new tab.
   GURL url = URLRequestMockHTTPJob::GetMockUrl("save_page/b.htm");
-  NavigateToURLWithDisposition(incognito, url, NEW_FOREGROUND_TAB,
+  NavigateToURLWithDisposition(incognito, url,
+                               WindowOpenDisposition::NEW_FOREGROUND_TAB,
                                ui_test_utils::BROWSER_TEST_WAIT_FOR_TAB);
 
   // Save the page before completion.
   base::FilePath full_file_name, dir;
   GetDestinationPaths("b", &full_file_name, &dir);
   scoped_refptr<content::MessageLoopRunner> loop_runner(
       new content::MessageLoopRunner);
   SavePackageFinishedObserver observer(
       content::BrowserContext::GetDownloadManager(incognito->profile()),
       loop_runner->QuitClosure());
@@ skipping 723 matching lines @@
   TestOriginalVsSavedPage(save_page_type, url, 1, expected_substrings);
 }
 
 INSTANTIATE_TEST_CASE_P(
     SaveType,
     SavePageOriginalVsSavedComparisonTest,
     ::testing::Values(content::SAVE_PAGE_TYPE_AS_COMPLETE_HTML,
                       content::SAVE_PAGE_TYPE_AS_MHTML));
 
 }  // namespace