Blink bindings: use v8 to enforce method call access checks

third_party/WebKit/Source/modules/fetch/GlobalFetch.cpp

Index: third_party/WebKit/Source/modules/fetch/GlobalFetch.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/GlobalFetch.cpp b/third_party/WebKit/Source/modules/fetch/GlobalFetch.cpp
index 7f508118ad91a1f97a21ee3fb0210cd04c22db53..72efc30ce371628a82755179d654c2adfabdb00f 100644
--- a/third_party/WebKit/Source/modules/fetch/GlobalFetch.cpp
+++ b/third_party/WebKit/Source/modules/fetch/GlobalFetch.cpp
@@ -98,6 +98,10 @@ ScriptPromise GlobalFetch::fetch(ScriptState* scriptState,
                                  const Dictionary& init,
                                  ExceptionState& exceptionState) {
   UseCounter::count(window.getExecutionContext(), UseCounter::Fetch);
+  if (!window.frame()) {
+    exceptionState.throwTypeError("The global scope is shutting down.");
+    return ScriptPromise();
+  }
   return ScopedFetcher::from(window)->fetch(scriptState, input, init,
                                             exceptionState);
 }