Wire up RTP keep-alive in ortc api.

webrtc/common_types.h

Index: webrtc/common_types.h
diff --git a/webrtc/common_types.h b/webrtc/common_types.h
index 43ae642375d8d0e9f22acabf9f1684a125f0b25f..3a454c7c7d464e878d452ce31260b2cdcf08a401 100644
--- a/webrtc/common_types.h
+++ b/webrtc/common_types.h
@@ -927,7 +927,7 @@ enum NetworkState {
   kNetworkDown,
 };
 
-struct RtpKeepAliveConfig {
+struct RtpKeepAliveConfig final {
   // If no packet has been sent for |timeout_interval_ms|, send a keep-alive
   // packet. The keep-alive packet is an empty (no payload) RTP packet with a
   // payload type of 20 as long as the other end has not negotiated the use of
@@ -936,6 +936,12 @@ struct RtpKeepAliveConfig {
   // in |payload_type|.
   int64_t timeout_interval_ms = -1;
   uint8_t payload_type = 20;
+
+  bool operator==(const RtpKeepAliveConfig& o) const {
+    return timeout_interval_ms == o.timeout_interval_ms &&
+           payload_type == o.payload_type;
+  }
+  bool operator!=(const RtpKeepAliveConfig& o) const { return !(*this == o); }
 };
 
 }  // namespace webrtc