binding: Makes event listener attributes use the relevant realm.

third_party/WebKit/Source/bindings/core/v8/ScriptState.h

Index: third_party/WebKit/Source/bindings/core/v8/ScriptState.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/ScriptState.h b/third_party/WebKit/Source/bindings/core/v8/ScriptState.h
index 3ec85d0ffbac1831023e388afbdd697e0d2b74b4..b0b0fd8530be5f9b3711f8272a63d42d98737c63 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ScriptState.h
+++ b/third_party/WebKit/Source/bindings/core/v8/ScriptState.h
@@ -76,6 +76,11 @@ class CORE_EXPORT ScriptState : public RefCounted<ScriptState> {
     return from(info.Holder()->CreationContext());
   }
 
+  static ScriptState* forReceiverObject(
+      const v8::PropertyCallbackInfo<void>& info) {
+    return from(info.Holder()->CreationContext());
+  }
+
   // Debugger context doesn't have associated ScriptState and when current
   // context is debugger it should be treated as if context stack was empty.
   static bool hasCurrentScriptState(v8::Isolate* isolate) {