Implement initial part of WebEmbeddedWorker

public/platform/WebURLRequest.h

 /*
  * Copyright (C) 2009 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 67 matching lines @@
         TargetIsImage = 6,
         TargetIsObject = 7,
         TargetIsMedia = 8,
         TargetIsWorker = 9,
         TargetIsSharedWorker = 10,
         TargetIsPrefetch = 11,
         TargetIsFavicon = 12,
         TargetIsXHR = 13,
         TargetIsTextTrack = 14,
         TargetIsPing = 15,
-        TargetIsUnspecified = 16,
+        TargetIsServiceWorker = 16,
+        TargetIsUnspecified = 17,
     };
 
     class ExtraData {
     public:
         virtual ~ExtraData() { }
     };
 
     ~WebURLRequest() { reset(); }
 
     WebURLRequest() : m_private(0) { }
@@ skipping 105 matching lines @@
 protected:
     BLINK_PLATFORM_EXPORT void assign(WebURLRequestPrivate*);
 
 private:
     WebURLRequestPrivate* m_private;
 };
 
 } // namespace blink
 
 #endif