Use the new forwarder2's Daemon implementation in device_forwarder.

tools/android/forwarder2/forwarder.gyp

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'forwarder2',
       'type': 'none',
       'dependencies': [
@@ skipping 21 matching lines @@
             '-fPIE',
           ],
           'ldflags': [
             '-pie',
           ],
         }],
       ],
       'sources': [
         'command.cc',
         'common.cc',
+        'daemon.cc',
         'device_controller.cc',
         'device_forwarder_main.cc',
         'device_listener.cc',
         'forwarder.cc',
         'pipe_notifier.cc',
         'socket.cc',
         'thread.cc',
       ],
     },
     {
@@ skipping 14 matching lines @@
         'forwarder.cc',
         'host_controller.cc',
         'host_forwarder_main.cc',
         'pipe_notifier.cc',
         'socket.cc',
         'thread.cc',
       ],
     },
   ],
 }