Re-enable CrossSiteIframeBecomesSameSite.

chrome/browser/task_manager/task_manager_browsertest.cc

 // Copyright (c) 2012 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 "chrome/browser/task_manager/task_manager.h"
 
 #include "base/files/file_path.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 1009 matching lines @@
     ASSERT_NO_FATAL_FAILURE(
         WaitForTaskManagerRows(1, MatchSubframe("http://b.com/")));
     ASSERT_NO_FATAL_FAILURE(
         WaitForTaskManagerRows(1, MatchSubframe("http://c.com/")));
     ASSERT_NO_FATAL_FAILURE(WaitForTaskManagerRows(2, MatchAnySubframe()));
   }
 }
 
 // Tests what happens when a tab navigates a cross-frame iframe (to b.com)
 // back to the site of the parent document (a.com).
-//
-// TODO(nick): http://crbug.com/433012. Disabled because the second navigation
-// crashes the renderer under --site-per-process during blink::Frame::detach().
 IN_PROC_BROWSER_TEST_P(TaskManagerOOPIFBrowserTest,
-                       DISABLED_CrossSiteIframeBecomesSameSite) {
+                       CrossSiteIframeBecomesSameSite) {
   ShowTaskManager();
 
   host_resolver()->AddRule("*", "127.0.0.1");
   ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
   content::SetupCrossSiteRedirector(embedded_test_server());
 
   // Navigate the tab to a page on a.com with cross-process subframes to
   // b.com and c.com.
   GURL a_dotcom(embedded_test_server()->GetURL(
       "/cross-site/a.com/iframe_cross_site.html"));
@@ skipping 42 matching lines @@
   } else {
     ASSERT_NO_FATAL_FAILURE(
         WaitForTaskManagerRows(0, MatchSubframe("http://b.com/")));
     ASSERT_NO_FATAL_FAILURE(
         WaitForTaskManagerRows(1, MatchSubframe("http://c.com/")));
     ASSERT_NO_FATAL_FAILURE(WaitForTaskManagerRows(1, MatchAnySubframe()));
   }
   ASSERT_NO_FATAL_FAILURE(WaitForTaskManagerRows(1, MatchTab("aac")));
   ASSERT_NO_FATAL_FAILURE(WaitForTaskManagerRows(1, MatchAnyTab()));
 }