binding: Makes event listener attributes use the relevant realm.

third_party/WebKit/Source/bindings/scripts/v8_attributes.py

Index: third_party/WebKit/Source/bindings/scripts/v8_attributes.py
diff --git a/third_party/WebKit/Source/bindings/scripts/v8_attributes.py b/third_party/WebKit/Source/bindings/scripts/v8_attributes.py
index 2f0f27665031708fd2a7c25ff3a05e9fc7bd0a57..d28bb73b68382f9b7faf5127494a391d5881177a 100644
--- a/third_party/WebKit/Source/bindings/scripts/v8_attributes.py
+++ b/third_party/WebKit/Source/bindings/scripts/v8_attributes.py
@@ -458,9 +458,14 @@ def setter_expression(interface, attribute, context):
         if (interface.name in ['Window', 'WorkerGlobalScope'] and
                 attribute.name == 'onerror'):
             includes.add('bindings/core/v8/V8ErrorHandler.h')
-            arguments.append('V8EventListenerHelper::ensureEventListener<V8ErrorHandler>(v8Value, true, ScriptState::current(info.GetIsolate()))')
+            arguments.append(
+                'V8EventListenerHelper::ensureEventListener<V8ErrorHandler>(' +
+                'v8Value, true, ScriptState::forReceiverObject(info))')
         else:
-            arguments.append('V8EventListenerHelper::getEventListener(ScriptState::current(info.GetIsolate()), v8Value, true, ListenerFindOrCreate)')
+            arguments.append(
+                'V8EventListenerHelper::getEventListener(' +
+                'ScriptState::forReceiverObject(info), v8Value, true, ' +
+                'ListenerFindOrCreate)')
     else:
         arguments.append('cppValue')
     if context['is_setter_raises_exception']: