Refactor the daemon controller so that the callbacks are called on the caller thread.

remoting/remoting.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.
 
 {
   'variables': {
     'chromium_code': 1,
 
     'variables': {
       'conditions': [
@@ skipping 559 matching lines @@
           'variables': { 'enable_wexit_time_destructors': 1, },
           'dependencies': [
             '../base/base.gyp:base',
             '../google_apis/google_apis.gyp:google_apis',
             'remoting_host',
           ],
           'defines': [
             'VERSION=<(version_full)',
           ],
           'sources': [
+            'host/setup/daemon_controller.cc',
             'host/setup/daemon_controller.h',
-            'host/setup/daemon_controller_linux.cc',
-            'host/setup/daemon_controller_mac.mm',
-            'host/setup/daemon_controller_win.cc',
+            'host/setup/daemon_controller_delegate_linux.cc',
+            'host/setup/daemon_controller_delegate_linux.h',
+            'host/setup/daemon_controller_delegate_mac.h',
+            'host/setup/daemon_controller_delegate_mac.mm',
+            'host/setup/daemon_controller_delegate_win.cc',
+            'host/setup/daemon_controller_delegate_win.h',
             'host/setup/daemon_installer_win.cc',
             'host/setup/daemon_installer_win.h',
             'host/setup/host_starter.cc',
             'host/setup/host_starter.h',
             'host/setup/native_messaging_host.cc',
             'host/setup/native_messaging_host.h',
             'host/setup/native_messaging_reader.cc',
             'host/setup/native_messaging_reader.h',
             'host/setup/native_messaging_writer.cc',
             'host/setup/native_messaging_writer.h',
@@ skipping 2356 matching lines @@
                   '../base/allocator/allocator.gyp:allocator',
                 ],
               },
             ],
           ],
         }],  # end of 'toolkit_uses_gtk == 1'
       ],  # end of 'conditions'
     },  # end of target 'remoting_unittests'
   ],  # end of targets
 }