RTCCertificate equals method for testing.

third_party/WebKit/public/platform/WebRTCCertificate.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WebRTCCertificate_h
 #define WebRTCCertificate_h
 
 #include "public/platform/WebRTCKeyParams.h"
 
 #include <memory>
@@ skipping 13 matching lines @@
     // Copies the WebRTCCertificate object without copying the underlying implementation
     // specific (WebRTC layer) certificate. When all copies are destroyed the underlying
     // data is freed.
     virtual std::unique_ptr<WebRTCCertificate> shallowCopy() const = 0;
 
     virtual const WebRTCKeyParams& keyParams() const = 0;
 
     // Returns the expiration time in ms relative to epoch, 1970-01-01T00:00:00Z.
     virtual uint64_t expires() const = 0;
 
+    // Checks if the two certificate objects represent the same certificate value,
+    // as should be the case for a clone and the original.
+    virtual bool equals(const WebRTCCertificate& other) const = 0;
+
 private:
     WebRTCCertificate(const WebRTCCertificate&) = delete;
     WebRTCCertificate& operator=(const WebRTCCertificate&) = delete;
 };
 
 } // namespace blink
 
 #endif // WebRTCCertificate_h