Re-enable CrossSiteIframeBecomesSameSite.

chrome/browser/task_manager/task_manager_browsertest.cc

Index: chrome/browser/task_manager/task_manager_browsertest.cc
diff --git a/chrome/browser/task_manager/task_manager_browsertest.cc b/chrome/browser/task_manager/task_manager_browsertest.cc
index 2cd1796a4e096271e3f6b03c9d813e0b1f15656e..39bebdf3095acc9782ec62f656cbaf170342d2e0 100644
--- a/chrome/browser/task_manager/task_manager_browsertest.cc
+++ b/chrome/browser/task_manager/task_manager_browsertest.cc
@@ -1027,11 +1027,8 @@ IN_PROC_BROWSER_TEST_P(TaskManagerOOPIFBrowserTest,
 
 // 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");