Remove deprecated IsUnresolved() method from SocketAddress API.

webrtc/base/macasyncsocket.cc

 /*
  *  Copyright 2010 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 94 matching lines @@
   }
 }
 
 // Connect to a remote address.
 int MacAsyncSocket::Connect(const SocketAddress& addr) {
   // TODO(djw): Consolidate all the connect->resolve->doconnect implementations.
   if (state_ != CS_CLOSED) {
     SetError(EALREADY);
     return SOCKET_ERROR;
   }
-  if (addr.IsUnresolved()) {
+  if (addr.IsUnresolvedIP()) {
     LOG(LS_VERBOSE) << "Resolving addr in MacAsyncSocket::Connect";
     resolver_ = new AsyncResolver();
     resolver_->SignalWorkDone.connect(this,
                                       &MacAsyncSocket::OnResolveResult);
     resolver_->Start(addr);
     state_ = CS_CONNECTING;
     return 0;
   }
   return DoConnect(addr);
 }
@@ skipping 342 matching lines @@
       this_socket->current_callbacks_ &= ~kCFSocketWriteCallBack;
       this_socket->SignalWriteEvent(this_socket);
       break;
 
     default:
       ASSERT(false && "Invalid callback type for socket");
   }
 }
 
 }  // namespace rtc