Revert of Disable OriginReplicationAllowsAccessToStorage test.

chrome/browser/chrome_site_per_process_browsertest.cc

 // Copyright 2014 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 "base/command_line.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
@@ skipping 36 matching lines @@
   GURL main_url(embedded_test_server()->GetURL(
         "a.com",
         "/frame_tree/page_with_two_frames_remote_and_local.html"));
   ui_test_utils::NavigateToURL(browser(), main_url);
 }
 
 // Verify that origin replication allows JS access to localStorage, database,
 // and FileSystem APIs.  These features involve a check on the
 // WebSecurityOrigin of the topmost WebFrame in ContentSettingsObserver, and
 // this test ensures this check works when the top frame is remote.
-//
-// Disabled due to a shutdown race condition that can lead to UAF in the
-// renderer (https://crbug.com/470055).
 IN_PROC_BROWSER_TEST_F(ChromeSitePerProcessTest,
-                       DISABLED_OriginReplicationAllowsAccessToStorage) {
+                       OriginReplicationAllowsAccessToStorage) {
   // Navigate to a page with a same-site iframe.
   GURL main_url(embedded_test_server()->GetURL("a.com", "/iframe.html"));
   ui_test_utils::NavigateToURL(browser(), main_url);
 
   // Navigate subframe cross-site.
   content::WebContents* active_web_contents =
       browser()->tab_strip_model()->GetActiveWebContents();
   GURL cross_site_url(embedded_test_server()->GetURL("b.com", "/title2.html"));
   EXPECT_TRUE(NavigateIframeToURL(active_web_contents, "test", cross_site_url));
 
@@ skipping 22 matching lines @@
   EXPECT_TRUE(ExecuteScriptAndExtractBool(
       frame_host,
       "window.domAutomationController.send(!!openDatabase("
       "'foodb', '1.0', 'Test DB', 1024));",
       &is_object_created));
   EXPECT_TRUE(is_object_created);
   EXPECT_TRUE(ExecuteScript(frame_host,
                             "window.webkitRequestFileSystem("
                             "window.TEMPORARY, 1024, function() {});"));
 }