v8bindings: Reverts crrev.com/2606723002 with minimum changes.

third_party/WebKit/Source/bindings/core/v8/custom/V8WindowCustom.cpp

 /*
  * Copyright (C) 2009, 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 336 matching lines @@
   if (child) {
     // step 3. Remove each browsing context from childBrowsingContexts whose
     // active document's origin is not same origin with activeDocument's origin
     // and whose browsing context name does not match the name of its browsing
     // context container's name content attribute value.
     if (BindingSecurity::shouldAllowNamedAccessTo(window, child->domWindow()) ||
         name == child->owner()->browsingContextContainerName()) {
       v8SetReturnValueFast(info, child->domWindow(), window);
       return;
     }
+
+    // In addition to the above spec'ed case, we return the child window
+    // regardless of step 3 due to crbug.com/701489 for the time being.
+    // TODO(yukishiino): Makes iframe.name update the browsing context name
+    // appropriately and makes the new name available in the named access on
+    // window.  Then, removes the following two lines.
+    v8SetReturnValueFast(info, child->domWindow(), window);
+    return;
   }
 
   // This is a cross-origin interceptor. Check that the caller has access to the
   // named results.
   if (!BindingSecurity::shouldAllowAccessTo(
           currentDOMWindow(info.GetIsolate()), window,
           BindingSecurity::ErrorReportOption::DoNotReport)) {
     BindingSecurity::failedAccessCheckFor(info.GetIsolate(), frame);
     return;
   }
@@ skipping 26 matching lines @@
     if (items->hasExactlyOneItem()) {
       v8SetReturnValueFast(info, items->item(0), window);
       return;
     }
     v8SetReturnValueFast(info, items, window);
     return;
   }
 }
 
 }  // namespace blink