Revert of Increase the stun ping interval.

webrtc/p2p/base/p2ptransportchannel_unittest.cc

Index: webrtc/p2p/base/p2ptransportchannel_unittest.cc
diff --git a/webrtc/p2p/base/p2ptransportchannel_unittest.cc b/webrtc/p2p/base/p2ptransportchannel_unittest.cc
index ca83ac04e7e45818f1d9a757e753d0d98f94c6ab..21564e6bab98674bd815a1b7796e106660a7a581 100644
--- a/webrtc/p2p/base/p2ptransportchannel_unittest.cc
+++ b/webrtc/p2p/base/p2ptransportchannel_unittest.cc
@@ -2606,14 +2606,13 @@
 
   cricket::P2PTransportChannel& StartTransportChannel(
       bool prioritize_most_likely_to_work,
-      int writable_connection_ping_interval) {
+      int max_strong_interval) {
     channel_.reset(
         new cricket::P2PTransportChannel("checks", 1, nullptr, allocator()));
     cricket::IceConfig config = channel_->config();
     config.prioritize_most_likely_candidate_pairs =
         prioritize_most_likely_to_work;
-    config.writable_connection_ping_interval =
-        writable_connection_ping_interval;
+    config.max_strong_interval = max_strong_interval;
     channel_->SetIceConfig(config);
     PrepareChannel(channel_.get());
     channel_->Connect();