Support ServiceWorker created request objects.

Source/platform/network/HTTPHeaderMap.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  * 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:
  * 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 46 matching lines @@
 
     size_t size() const { return m_headers.size(); }
     const_iterator begin() const { return m_headers.begin(); }
     const_iterator end() const { return m_headers.end(); }
     const_iterator find(const AtomicString &k) const { return m_headers.find(k); }
     void clear() { m_headers.clear(); }
     const AtomicString& get(const AtomicString& k) const { return m_headers.get(k); }
     AddResult set(const AtomicString& k, const AtomicString& v) { return m_headers.set(k, v); }
     AddResult add(const AtomicString& k, const AtomicString& v) { return m_headers.add(k, v); }
     void remove(const AtomicString& k) { m_headers.remove(k); }
-    bool operator!=(const HTTPHeaderMap &rhs) const { return m_headers != rhs.m_headers; }
+    bool operator!=(const HTTPHeaderMap& rhs) const { return m_headers != rhs.m_headers; }
+    bool operator==(const HTTPHeaderMap& rhs) const { return m_headers == rhs.m_headers; }
 
     // Alternate accessors that are faster than converting the char* to AtomicString first.
     bool contains(const char*) const;
     const AtomicString& get(const char*) const;
     AddResult add(const char* name, const AtomicString& value);
 
 private:
     HashMap<AtomicString, AtomicString, CaseFoldingHash> m_headers;
 };
 
 } // namespace blink
 
 #endif // HTTPHeaderMap_h