Implement HostPortAllocator.

remoting/protocol/libjingle_transport_factory.h

Index: remoting/protocol/libjingle_transport_factory.h
diff --git a/remoting/protocol/libjingle_transport_factory.h b/remoting/protocol/libjingle_transport_factory.h
index fb47b0037fb7008c024c01edcc0be64a34078485..0cead6d26a5f31bcbe1c445956cc3f5d4d6e3a58 100644
--- a/remoting/protocol/libjingle_transport_factory.h
+++ b/remoting/protocol/libjingle_transport_factory.h
@@ -22,9 +22,11 @@ namespace protocol {
 
 class LibjingleTransportFactory : public TransportFactory {
  public:
+  // Need to use cricket::HttpPortAllocatorBase pointer for the
+  // |port_allocator|, so that it is possible to configure
+  // |port_allocator| with STUN/Relay addresses.
+  // TODO(sergeyu): Reconsider this design.
   LibjingleTransportFactory(
-      scoped_ptr<talk_base::NetworkManager> network_manager,
-      scoped_ptr<talk_base::PacketSocketFactory> socket_factory,
       scoped_ptr<cricket::HttpPortAllocatorBase> port_allocator,
       bool incoming_only);