Implement initial part of WebEmbeddedWorker

public/web/WebEmbeddedWorkerStartData.h

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 27 matching lines @@
 namespace blink {
 
 enum WebEmbeddedWorkerStartMode {
     WebEmbeddedWorkerStartModeDontPauseOnStart,
     WebEmbeddedWorkerStartModePauseOnStart
 };
 
 struct WebEmbeddedWorkerStartData {
     WebURL scriptURL;
     WebString userAgent;
-    WebString contentSecurityPolicy;
-    WebContentSecurityPolicyType contentSecurityPolicyType;
     WebEmbeddedWorkerStartMode startMode;
 };
 
 } // namespace blink
 
 #endif // WebEmbeddedWorkerStartData_h