Revert of Disable PasswordManagerBrowserTestBase.InternalsPage on Mac

chrome/browser/password_manager/password_manager_browsertest.cc

Index: chrome/browser/password_manager/password_manager_browsertest.cc
diff --git a/chrome/browser/password_manager/password_manager_browsertest.cc b/chrome/browser/password_manager/password_manager_browsertest.cc
index 6a383b67368fd96ea0a735490518d1f7812af13f..c5d05d396671a933f4421a9fedf0ad733982bf15 100644
--- a/chrome/browser/password_manager/password_manager_browsertest.cc
+++ b/chrome/browser/password_manager/password_manager_browsertest.cc
@@ -2744,13 +2744,7 @@
 
 // Check that the internals page contains logs both from the renderer and the
 // browser.
-// TODO(crbug.com/640737) Flaky on Mac.
-#if defined(OS_MACOSX)
-#define MAYBE_InternalsPage DISABLED_InternalsPage
-#else
-#define MAYBE_InternalsPage InternalsPage
-#endif
-IN_PROC_BROWSER_TEST_F(PasswordManagerBrowserTestBase, MAYBE_InternalsPage) {
+IN_PROC_BROWSER_TEST_F(PasswordManagerBrowserTestBase, InternalsPage) {
   ui_test_utils::NavigateToURLWithDisposition(
       browser(), GURL("chrome://password-manager-internals"), CURRENT_TAB,
       ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);