Revert of Adding IceConfig option to assume TURN/TURN candidate pairs will work.

webrtc/p2p/base/port.h

Index: webrtc/p2p/base/port.h
diff --git a/webrtc/p2p/base/port.h b/webrtc/p2p/base/port.h
index 1b6d6522f7bfcb3a8c0f1d82c53bd44bef335987..65932b9c9f0f400636fca9f558a2bc04b68456de 100644
--- a/webrtc/p2p/base/port.h
+++ b/webrtc/p2p/base/port.h
@@ -178,7 +178,7 @@
   }
 
   // Identifies the generation that this port was created in.
-  uint32_t generation() const { return generation_; }
+  uint32_t generation() { return generation_; }
   void set_generation(uint32_t generation) { generation_ = generation; }
 
   const std::string username_fragment() const;