Reland of Do not delete a connection in the turn port with permission error or refresh error.

webrtc/p2p/base/turnport.h

Index: webrtc/p2p/base/turnport.h
diff --git a/webrtc/p2p/base/turnport.h b/webrtc/p2p/base/turnport.h
index 17d2d45181930bcc1ce9bb8ba8a75b0cf03225d4..6e528aaf69a2f2191c6b6474cd5c0da4e6bfc6ab 100644
--- a/webrtc/p2p/base/turnport.h
+++ b/webrtc/p2p/base/turnport.h
@@ -38,7 +38,9 @@
     STATE_CONNECTING,    // Initial state, cannot send any packets.
     STATE_CONNECTED,     // Socket connected, ready to send stun requests.
     STATE_READY,         // Received allocate success, can send any packets.
-    STATE_DISCONNECTED,  // TCP connection died, cannot send any packets.
+    STATE_RECEIVEONLY,   // Had REFRESH_REQUEST error, cannot send any packets.
+    STATE_DISCONNECTED,  // TCP connection died, cannot send/receive any
+                         // packets.
   };
   static TurnPort* Create(rtc::Thread* thread,
                           rtc::PacketSocketFactory* factory,
@@ -202,7 +204,8 @@
     }
   }
 
-  void OnTurnRefreshError();
+  void OnRefreshError();
+  void HandleRefreshError();
   bool SetAlternateServer(const rtc::SocketAddress& address);
   void ResolveTurnAddress(const rtc::SocketAddress& address);
   void OnResolveResult(rtc::AsyncResolverInterface* resolver);
@@ -245,9 +248,9 @@
   void ScheduleEntryDestruction(TurnEntry* entry);
   void CancelEntryDestruction(TurnEntry* entry);
 
-  // Destroys the connection with remote address |address|. Returns true if
-  // a connection is found and destroyed.
-  bool DestroyConnection(const rtc::SocketAddress& address);
+  // Marks the connection with remote address |address| failed and
+  // pruned (a.k.a. write-timed-out). Returns true if a connection is found.
+  bool FailAndPruneConnection(const rtc::SocketAddress& address);
 
   ProtocolAddress server_address_;
   RelayCredentials credentials_;