[Chromoting] Make ChromotingHost's dependency on libjingle injected, instead of hard-coded.

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': {
     # TODO(dmaclach): can we pick this up some other way? Right now it's
     # duplicated from chrome.gyp
     'chromium_code': 1,
     # Use consistent strings across all platforms. Note that the plugin name
@@ skipping 1133 matching lines @@
         'host/register_support_host_request.cc',
         'host/register_support_host_request.h',
         'host/remote_input_filter.cc',
         'host/remote_input_filter.h',
         'host/screen_recorder.cc',
         'host/screen_recorder.h',
         'host/server_log_entry.cc',
         'host/server_log_entry.h',
         'host/session_event_executor_win.cc',
         'host/session_event_executor_win.h',
+        'host/session_manager_factory.cc',
+        'host/session_manager_factory.h',
         'host/signaling_connector.cc',
         'host/signaling_connector.h',
         'host/scoped_thread_desktop_win.cc',
         'host/scoped_thread_desktop_win.h',
         'host/ui_strings.cc',
         'host/ui_strings.h',
         'host/url_fetcher.cc',
         'host/url_fetcher.h',
         'host/url_request_context.cc',
         'host/url_request_context.h',
@@ skipping 542 matching lines @@
                   '../base/allocator/allocator.gyp:allocator',
                 ],
               },
             ],
           ],
         }],
       ],  # end of 'conditions'
     },  # end of target 'remoting_unittests'
   ],  # end of targets
 }