Convert WindowOpenDisposition to an enum class.

chrome/browser/chromeos/policy/device_local_account_browsertest.cc

Index: chrome/browser/chromeos/policy/device_local_account_browsertest.cc
diff --git a/chrome/browser/chromeos/policy/device_local_account_browsertest.cc b/chrome/browser/chromeos/policy/device_local_account_browsertest.cc
index a84a3747c948a82d227beda950a55af51deebdfb..939631f49a75516288642e511e44f95b36b27e2c 100644
--- a/chrome/browser/chromeos/policy/device_local_account_browsertest.cc
+++ b/chrome/browser/chromeos/policy/device_local_account_browsertest.cc
@@ -1565,9 +1565,9 @@ IN_PROC_BROWSER_TEST_F(DeviceLocalAccountTest, LastWindowClosedLogoutReminder) {
 
   // Start the platform app, causing it to open a window.
   run_loop_.reset(new base::RunLoop);
-  OpenApplication(AppLaunchParams(profile, app,
-                                  extensions::LAUNCH_CONTAINER_NONE, NEW_WINDOW,
-                                  extensions::SOURCE_TEST));
+  OpenApplication(AppLaunchParams(
+      profile, app, extensions::LAUNCH_CONTAINER_NONE,
+      WindowOpenDisposition::NEW_WINDOW, extensions::SOURCE_TEST));
   run_loop_->Run();
   EXPECT_EQ(1U, app_window_registry->app_windows().size());