Changing STUN request log message to "verbose".

TBR=pthatcher@webrtc.org
NOTRY=True

Review URL: https://codereview.webrtc.org/2015773002 .

Cr-Commit-Position: refs/heads/master@{#12901}
diff --git a/webrtc/p2p/base/stunrequest.cc b/webrtc/p2p/base/stunrequest.cc
index 2a4f9c9..32449e2 100644
--- a/webrtc/p2p/base/stunrequest.cc
+++ b/webrtc/p2p/base/stunrequest.cc
@@ -221,14 +221,15 @@
 
   OnSent();
   manager_->thread_->PostDelayed(resend_delay(), this, MSG_STUN_SEND, NULL);
-  LOG(LS_INFO) << "Sent STUN request " << count_
-               << "; resend delay = " << resend_delay();
 }
 
 void StunRequest::OnSent() {
   count_ += 1;
-  if (count_ == MAX_SENDS)
+  if (count_ == MAX_SENDS) {
     timeout_ = true;
+  }
+  LOG(LS_VERBOSE) << "Sent STUN request " << count_
+                  << "; resend delay = " << resend_delay();
 }
 
 int StunRequest::resend_delay() {