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

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

Index: third_party/WebKit/Source/bindings/core/v8/custom/V8WindowCustom.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/custom/V8WindowCustom.cpp b/third_party/WebKit/Source/bindings/core/v8/custom/V8WindowCustom.cpp
index 915102948d8251d2f6a80673b9c5daf47e590ea2..283c590be9c5312296756203310d1f3c475874be 100644
--- a/third_party/WebKit/Source/bindings/core/v8/custom/V8WindowCustom.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/custom/V8WindowCustom.cpp
@@ -354,6 +354,14 @@ void V8Window::namedPropertyGetterCustom(
       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