Expose Document::isPrivilegedContext from WebDocument

Source/core/workers/WorkerGlobalScope.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009, 2011 Google Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 327 matching lines @@
     return m_messageStorage.get();
 }
 
 void WorkerGlobalScope::exceptionHandled(int exceptionId, bool isHandled)
 {
     RefPtrWillBeRawPtr<ConsoleMessage> consoleMessage = m_pendingMessages.take(exceptionId);
     if (!isHandled)
         addConsoleMessage(consoleMessage.release());
 }
 
-bool WorkerGlobalScope::isPrivilegedContext(String& errorMessage, const PrivilegeContextCheck privilegeContextCheck)
+bool WorkerGlobalScope::isPrivilegedContext(String& errorMessage, const PrivilegeContextCheck privilegeContextCheck) const
 {
     // Until there are APIs that are available in workers and that
     // require a privileged context test that checks ancestors, just do
     // a simple check here. Once we have a need for a real
     // |isPrivilegedContext| check here, we can check the responsible
     // document for a privileged context at worker creation time, pass
     // it in via WorkerThreadStartupData, and check it here.
     return securityOrigin()->isPotentiallyTrustworthy(errorMessage);
 }
 
@@ skipping 33 matching lines @@
     visitor->trace(m_timers);
     visitor->trace(m_messageStorage);
     visitor->trace(m_pendingMessages);
     HeapSupplementable<WorkerGlobalScope>::trace(visitor);
 #endif
     ExecutionContext::trace(visitor);
     EventTargetWithInlineData::trace(visitor);
 }
 
 } // namespace blink