Convert WindowOpenDisposition to an enum class.

chrome/browser/ui/cocoa/task_manager_mac_browsertest.mm

Index: chrome/browser/ui/cocoa/task_manager_mac_browsertest.mm
diff --git a/chrome/browser/ui/cocoa/task_manager_mac_browsertest.mm b/chrome/browser/ui/cocoa/task_manager_mac_browsertest.mm
index 5c4b992637de04acd6fa5033efd53d884fb8a925..ff8e7ccf38bbd84d390820a26661ac728c0dcc96 100644
--- a/chrome/browser/ui/cocoa/task_manager_mac_browsertest.mm
+++ b/chrome/browser/ui/cocoa/task_manager_mac_browsertest.mm
@@ -210,10 +210,12 @@ IN_PROC_BROWSER_TEST_F(TaskManagerMacTest, SelectionConsistency) {
       browser(), embedded_test_server()->GetURL("a.com", "/title2.html"));
   ui_test_utils::NavigateToURLWithDisposition(
       browser(), embedded_test_server()->GetURL("b.com", "/title2.html"),
-      NEW_FOREGROUND_TAB, ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
+      WindowOpenDisposition::NEW_FOREGROUND_TAB,
+      ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
   ui_test_utils::NavigateToURLWithDisposition(
       browser(), embedded_test_server()->GetURL("c.com", "/title2.html"),
-      NEW_FOREGROUND_TAB, ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
+      WindowOpenDisposition::NEW_FOREGROUND_TAB,
+      ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
 
   // Wait for their titles to appear in the TaskManager. There should be three
   // rows.
@@ -286,7 +288,7 @@ IN_PROC_BROWSER_TEST_F(TaskManagerMacTest, SelectionConsistency) {
   // Focus and reload one of the sad tabs. It should reappear in the TM. The
   // other sad tab should not reappear.
   tabs[1]->GetDelegate()->ActivateContents(tabs[1]);
-  chrome::Reload(browser(), CURRENT_TAB);
+  chrome::Reload(browser(), WindowOpenDisposition::CURRENT_TAB);
   ASSERT_NO_FATAL_FAILURE(WaitForTaskManagerRows((rows += 1), pattern));
 
   // tabs[2] should still be selected.