sheriff: re-enable GuestProfileReopenWithNoWindows under ASAN

It does not flake under ASAN in local tests, anyway. Let's see!

Bug: 674475
Change-Id: Id1f9f960610cca08e860e45af3d5f5a3821f7519
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1762352
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Auto-Submit: Elly Fong-Jones <ellyjones@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#688627}

chrome/browser/app_controller_mac_browsertest.mm

@@ -395,15 +395,9 @@ IN_PROC_BROWSER_TEST_F(AppControllerNewProfileManagementBrowserTest,
   EXPECT_FALSE(UserManager::IsShowing());
 }
 
-#if defined(ADDRESS_SANITIZER)
-// Flaky under ASAN. See https://crbug.com/674475.
-#define MAYBE_GuestProfileReopenWithNoWindows DISABLED_GuestProfileReopenWithNoWindows
-#else
-#define MAYBE_GuestProfileReopenWithNoWindows GuestProfileReopenWithNoWindows
-#endif
 // Test that for a guest last profile, a reopen event opens the User Manager.
 IN_PROC_BROWSER_TEST_F(AppControllerNewProfileManagementBrowserTest,
-                       MAYBE_GuestProfileReopenWithNoWindows) {
+                       GuestProfileReopenWithNoWindows) {
   // Create the system profile. Set the guest as the last used profile so the
   // app controller can use it on init.
   CreateAndWaitForSystemProfile();