Revert of Disable PasswordManagerBrowserTestBase.InternalsPage on Mac

chrome/browser/password_manager/password_manager_browsertest.cc

 // Copyright 2013 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 <string>
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 2726 matching lines @@
       "window.domAutomationController.send("
       "  document.getElementById('hidden_password_form').elements[2].value);";
   std::string actual_password;
   ASSERT_TRUE(content::ExecuteScriptAndExtractString(
       RenderViewHost(), get_password, &actual_password));
   EXPECT_EQ("mypassword", actual_password);
 }
 
 // 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);
   content::WebContents* internals_web_contents = WebContents();
 
   ui_test_utils::NavigateToURLWithDisposition(
       browser(), embedded_test_server()->GetURL("/password/password_form.html"),
       NEW_FOREGROUND_TAB, ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
 
   std::string find_renderer_logs =
@@ skipping 288 matching lines @@
   // about all frames, not just the main one. The factories should receive
   // messages for non-main frames, in particular
   // AutofillHostMsg_PasswordFormsParsed. If that were the first time the
   // factories hear about such frames, this would crash.
   tab_strip_model->AddWebContents(detached_web_contents.release(), -1,
                                   ::ui::PAGE_TRANSITION_AUTO_TOPLEVEL,
                                   TabStripModel::ADD_ACTIVE);
 }
 
 }  // namespace password_manager