Don't allow main world initialization while creating the initial empty document

third_party/WebKit/Source/bindings/core/v8/ScriptController.cpp

 /*
  * Copyright (C) 2008, 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2014 Opera Software ASA. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
@@ skipping 180 matching lines @@
             return result;
     }
 
     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "UpdateCounters", TRACE_EVENT_SCOPE_THREAD, "data", InspectorUpdateCountersEvent::data());
 
     return result;
 }
 
 bool ScriptController::initializeMainWorld()
 {
-    if (m_windowProxyManager->mainWorldProxy()->isContextInitialized())
+    if (m_windowProxyManager->mainWorldProxy()->isContextInitialized() || frame()->loader().stateMachine()->creatingInitialEmptyDocument())
         return false;
     return windowProxy(DOMWrapperWorld::mainWorld())->isContextInitialized();
 }
 
 WindowProxy* ScriptController::existingWindowProxy(DOMWrapperWorld& world)
 {
     return m_windowProxyManager->existingWindowProxy(world);
 }
 
 WindowProxy* ScriptController::windowProxy(DOMWrapperWorld& world)
@@ skipping 385 matching lines @@
         for (size_t i = 0; i < resultArray->Length(); ++i) {
             v8::Local<v8::Value> value;
             if (!resultArray->Get(scriptState->context(), i).ToLocal(&value))
                 return;
             results->append(value);
         }
     }
 }
 
 } // namespace blink