Remove deprecated IsUnresolved() method from SocketAddress API.

webrtc/base/physicalsocketserver.cc

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 169 matching lines @@
     return err;
   }
 
   int Connect(const SocketAddress& addr) override {
     // TODO: Implicit creation is required to reconnect...
     // ...but should we make it more explicit?
     if (state_ != CS_CLOSED) {
       SetError(EALREADY);
       return SOCKET_ERROR;
     }
-    if (addr.IsUnresolved()) {
+    if (addr.IsUnresolvedIP()) {
       LOG(LS_VERBOSE) << "Resolving addr in PhysicalSocket::Connect";
       resolver_ = new AsyncResolver();
       resolver_->SignalDone.connect(this, &PhysicalSocket::OnResolveResult);
       resolver_->Start(addr);
       state_ = CS_CONNECTING;
       return 0;
     }
 
     return DoConnect(addr);
   }
@@ skipping 1426 matching lines @@
        break;
     }
   }
 
   // Done
   return true;
 }
 #endif  // WEBRTC_WIN 
 
 }  // namespace rtc