Make it possible to set the HTTP origin header from content

Source/platform/network/ResourceRequest.h

 /*
  * Copyright (C) 2003, 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
  * Copyright (C) 2009, 2012 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.
@@ skipping 128 matching lines @@
     void setHTTPContentType(const AtomicString& httpContentType) { setHTTPHeaderField("Content-Type", httpContentType); }
 
     const AtomicString& httpReferrer() const { return httpHeaderField("Referer"); }
     ReferrerPolicy referrerPolicy() const { return m_referrerPolicy; }
     void setHTTPReferrer(const Referrer& httpReferrer) { setHTTPHeaderField("Referer", httpReferrer.referrer); m_referrerPolicy = httpReferrer.referrerPolicy; }
     void clearHTTPReferrer();
 
     const AtomicString& httpOrigin() const { return httpHeaderField("Origin"); }
     void setHTTPOrigin(const AtomicString& httpOrigin) { setHTTPHeaderField("Origin", httpOrigin); }
     void clearHTTPOrigin();
+    void addHTTPOriginIfNeeded(const AtomicString& origin);
 
     const AtomicString& httpUserAgent() const { return httpHeaderField("User-Agent"); }
     void setHTTPUserAgent(const AtomicString& httpUserAgent) { setHTTPHeaderField("User-Agent", httpUserAgent); }
     void clearHTTPUserAgent();
 
     const AtomicString& httpAccept() const { return httpHeaderField("Accept"); }
     void setHTTPAccept(const AtomicString& httpAccept) { setHTTPHeaderField("Accept", httpAccept); }
 
     FormData* httpBody() const;
     void setHTTPBody(PassRefPtr<FormData> httpBody);
@@ skipping 115 matching lines @@
     int m_appCacheHostID;
     ResourceRequest::TargetType m_targetType;
     ReferrerPolicy m_referrerPolicy;
 };
 
 unsigned initializeMaximumHTTPConnectionCountPerHost();
 
 } // namespace WebCore
 
 #endif // ResourceRequest_h