Switch client to Pepper UDP API instead of Transport API.

remoting/client/plugin/pepper_packet_socket_factory.cc

 // Copyright (c) 2012 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.
 
 #include "remoting/client/plugin/pepper_packet_socket_factory.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "net/base/io_buffer.h"
 #include "ppapi/cpp/private/net_address_private.h"
@@ skipping 179 matching lines @@
 
 int UdpPacketSocket::Send(const void* data, size_t data_size) {
   // UDP sockets are not connected - this method should never be called.
   NOTREACHED();
   return EWOULDBLOCK;
 }
 
 int UdpPacketSocket::SendTo(const void* data,
                             size_t data_size,
                             const talk_base::SocketAddress& address) {
-  DCHECK_EQ(state_, STATE_BOUND);
+  if (state_ != STATE_BOUND) {
+    // TODO(sergeyu): StunPort may try to send stun request before we
+    // are bound. Fix that problem and change this to DCHECK.
+    return EINVAL;
+  }
 
   if (error_ != 0) {
     return error_;
   }
 
   PP_NetAddress_Private pp_address;
   if (!SocketAddressToPpAddress(address, &pp_address)) {
     return EINVAL;
   }
 
@@ skipping 133 matching lines @@
       const talk_base::SocketAddress& remote_address,
       const talk_base::ProxyInfo& proxy_info,
       const std::string& user_agent,
       bool ssl) {
   // We don't use TCP sockets for remoting connections.
   NOTREACHED();
   return NULL;
 }
 
 }  // namespace remoting