Simplify PortAllocatorBase and make PortAllocator creation synchronous.

remoting/protocol/webrtc_transport.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_PROTOCOL_WEBRTC_TRANSPORT_H_
 #define REMOTING_PROTOCOL_WEBRTC_TRANSPORT_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 56 matching lines @@
   StreamChannelFactory* incoming_channel_factory() {
     return &incoming_data_stream_adapter_;
   }
 
   // Transport interface.
   void Start(Authenticator* authenticator,
              SendTransportInfoCallback send_transport_info_callback) override;
   bool ProcessTransportInfo(buzz::XmlElement* transport_info) override;
 
  private:
-  void OnPortAllocatorCreated(
-      scoped_ptr<cricket::PortAllocator> port_allocator);
-
   void OnLocalSessionDescriptionCreated(
       scoped_ptr<webrtc::SessionDescriptionInterface> description,
       const std::string& error);
   void OnLocalDescriptionSet(bool success, const std::string& error);
   void OnRemoteDescriptionSet(bool send_answer,
                               bool success,
                               const std::string& error);
 
   // webrtc::PeerConnectionObserver interface.
   void OnSignalingChange(
@@ skipping 46 matching lines @@
 
   base::WeakPtrFactory<WebrtcTransport> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebrtcTransport);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_WEBRTC_TRANSPORT_H_