Remove task.h and finish base::Bind() migration.

remoting/protocol/jingle_session_manager.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/protocol/jingle_session_manager.h"
 
 #include <limits>
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/message_loop_proxy.h"
 #include "base/string_util.h"
-#include "base/task.h"
 #include "remoting/base/constants.h"
 #include "remoting/jingle_glue/jingle_info_request.h"
 #include "remoting/jingle_glue/jingle_signaling_connector.h"
 #include "remoting/jingle_glue/signal_strategy.h"
 #include "remoting/protocol/authenticator.h"
 #include "third_party/libjingle/source/talk/base/basicpacketsocketfactory.h"
 #include "third_party/libjingle/source/talk/p2p/base/constants.h"
 #include "third_party/libjingle/source/talk/p2p/base/sessionmanager.h"
 #include "third_party/libjingle/source/talk/p2p/base/transport.h"
 #include "third_party/libjingle/source/talk/p2p/client/httpportallocator.h"
@@ skipping 233 matching lines @@
     cricket::WriteError* error) {
   const ContentDescription* desc =
       static_cast<const ContentDescription*>(content);
 
   *elem = desc->ToXml();
   return true;
 }
 
 }  // namespace protocol
 }  // namespace remoting