RTCCertificate equals method for testing.

third_party/WebKit/Source/modules/mediastream/RTCCertificate.h

 /*
  * Copyright (C) 2015 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 37 matching lines @@
     RTCCertificate(std::unique_ptr<WebRTCCertificate>);
 
     // Returns a new WebRTCCertificate shallow copy.
     std::unique_ptr<WebRTCCertificate> certificateShallowCopy() const;
 
     DEFINE_INLINE_TRACE() {}
 
     // Returns the expiration time in ms relative to epoch, 1970-01-01T00:00:00Z.
     DOMTimeStamp expires() const;
 
+    // Checks if the two certificate objects represent the same certificate value,
+    // as should be the case for a clone and the original.
+    bool equals(RTCCertificate*) const;
+
 private:
     OwnPtr<WebRTCCertificate> m_certificate;
 };
 
 } // namespace blink
 
 #endif // RTCCertificate_h