Implement cross-origin attributes using access check interceptors.

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 70f3293c83182cacd79ceca9f8c3eca49c390726..3b96321ad7808abc613c96c413b691496c309035 100644
--- a/third_party/WebKit/Source/bindings/core/v8/custom/V8WindowCustom.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/custom/V8WindowCustom.cpp
@@ -289,23 +289,20 @@ void V8Window::namedPropertyGetterCustom(
     return;
   }
 
-  // If the frame is remote, the caller will never be able to access further
+  // This is a cross-origin interceptor. Check that the caller has access to the
   // named results.
-  if (!frame->isLocalFrame())
+  if (!BindingSecurity::shouldAllowAccessTo(
+          currentDOMWindow(info.GetIsolate()), window,
+          BindingSecurity::ErrorReportOption::DoNotReport)) {
+    BindingSecurity::failedAccessCheckFor(info.GetIsolate(), frame);
     return;
+  }
 
   // Search named items in the document.
   Document* doc = toLocalFrame(frame)->document();
   if (!doc || !doc->isHTMLDocument())
     return;
 
-  // This is an AllCanRead interceptor.  Check that the caller has access to the
-  // named results.
-  if (!BindingSecurity::shouldAllowAccessTo(
-          currentDOMWindow(info.GetIsolate()), window,
-          BindingSecurity::ErrorReportOption::DoNotReport))
-    return;
-
   bool hasNamedItem = toHTMLDocument(doc)->hasNamedItem(name);
   bool hasIdItem = doc->hasElementWithId(name);