Dispatching errors across iframes don't match webplatform tests

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ScriptState_h
 #define ScriptState_h
 
 #include "bindings/core/v8/ScopedPersistent.h"
 #include "bindings/core/v8/V8PerContextData.h"
 #include "core/CoreExport.h"
@@ skipping 165 matching lines @@
   void clear() {
     m_scriptState = nullptr;
     m_context.clear();
   }
 
  private:
   RefPtr<ScriptState> m_scriptState;
   ScopedPersistent<v8::Context> m_context;
 };
 
+class ScriptStateForErrorEvent : public RefCounted<ScriptStateForErrorEvent> {
+ public:
+  class Scope {
+    STACK_ALLOCATED();
+
+   public:
+    explicit Scope(ScriptState*, v8::Local<v8::Context>);
+    ~Scope();
+
+   private:
+    RefPtr<ScriptState> m_scriptState;
+  };
+
+  static PassRefPtr<ScriptStateForErrorEvent> create(v8::Local<v8::Context>);
+  ScriptState* scriptState() {
+    return ScriptState::from(m_context.newLocal(m_isolate));
+  }
+  v8::Local<v8::Context> context() const {
+    return m_context.newLocal(m_isolate);
+  }
+
+ private:
+  ScriptStateForErrorEvent(v8::Local<v8::Context> context)
+      : m_isolate(context->GetIsolate()), m_context(m_isolate, context) {}
+  v8::Isolate* m_isolate;
+  ScopedPersistent<v8::Context> m_context;
+};
+
 }  // namespace blink
 
 #endif  // ScriptState_h