Fire a signal when the transport channel state changes

webrtc/p2p/base/port.cc

Index: webrtc/p2p/base/port.cc
diff --git a/webrtc/p2p/base/port.cc b/webrtc/p2p/base/port.cc
index fbc64f2e0a784175a2f1f94ae25bac4aca3b710a..859336e05e0b3021e2bc064a9e681fa8ba11be86 100644
--- a/webrtc/p2p/base/port.cc
+++ b/webrtc/p2p/base/port.cc
@@ -1018,7 +1018,7 @@ void Connection::OnReadyToSend() {
 
 void Connection::Prune() {
   if (!pruned_ || active()) {
-    LOG_J(LS_VERBOSE, this) << "Connection pruned";
+    LOG_J(LS_INFO, this) << "Connection pruned";
     pruned_ = true;
     requests_.Clear();
     set_write_state(STATE_WRITE_TIMEOUT);