Allow applications to limit the ICE check rate through RTCConfiguration

webrtc/pc/peerconnection.cc

Index: webrtc/pc/peerconnection.cc
diff --git a/webrtc/pc/peerconnection.cc b/webrtc/pc/peerconnection.cc
index a38c98601bb2f66904531d8d8daf079fd3cb4e6c..14d2e945728243bc4132bb1752489b2a28e8912f 100644
--- a/webrtc/pc/peerconnection.cc
+++ b/webrtc/pc/peerconnection.cc
@@ -505,6 +505,7 @@ bool PeerConnectionInterface::RTCConfiguration::operator==(
     bool presume_writable_when_fully_relayed;
     bool enable_ice_renomination;
     bool redetermine_role_on_ice_restart;
+    rtc::Optional<int> ice_check_min_interval;
   };
   static_assert(sizeof(stuff_being_tested_for_equality) == sizeof(*this),
                 "Did you add something to RTCConfiguration and forget to "
@@ -536,7 +537,8 @@ bool PeerConnectionInterface::RTCConfiguration::operator==(
          presume_writable_when_fully_relayed ==
              o.presume_writable_when_fully_relayed &&
          enable_ice_renomination == o.enable_ice_renomination &&
-         redetermine_role_on_ice_restart == o.redetermine_role_on_ice_restart;
+         redetermine_role_on_ice_restart == o.redetermine_role_on_ice_restart &&
+         ice_check_min_interval == o.ice_check_min_interval;
 }
 
 bool PeerConnectionInterface::RTCConfiguration::operator!=(