Cleanups in Chromoting Host.

remoting/remoting.gyp

Index: remoting/remoting.gyp
diff --git a/remoting/remoting.gyp b/remoting/remoting.gyp
index 0172c32bdaa653ac74e3ba85953be32e06e94dae..863533b4c5ffb58e495425f1471ced1bde9d00a9 100644
--- a/remoting/remoting.gyp
+++ b/remoting/remoting.gyp
@@ -586,11 +586,10 @@
             'host/chromoting_messages.h',
             'host/config_file_watcher.cc',
             'host/config_file_watcher.h',
-            'host/constants.h',
-            'host/constants_win.cc',
             'host/daemon_process.cc',
             'host/daemon_process.h',
             'host/daemon_process_win.cc',
+            'host/host_exit_codes.h',
             'host/usage_stats_consent.h',
             'host/usage_stats_consent_win.cc',
             'host/win/host_service.cc',
@@ -878,8 +877,6 @@
         'base/breakpad_linux.cc',
         'base/breakpad_mac.mm',
         'base/breakpad_win.cc',
-        'host/constants.h',
-        'host/constants_win.cc',
       ],
       'conditions': [
         ['OS=="win"', {
@@ -1272,10 +1269,8 @@
         'host/clipboard_linux.cc',
         'host/clipboard_mac.mm',
         'host/clipboard_win.cc',
-        'host/constants.h',
         'host/constants_mac.cc',
         'host/constants_mac.h',
-        'host/constants_win.cc',
         'host/continue_window.h',
         'host/continue_window_gtk.cc',
         'host/continue_window_mac.mm',
@@ -1303,6 +1298,7 @@
         'host/heartbeat_sender.h',
         'host/host_config.cc',
         'host/host_config.h',
+        'host/host_exit_codes.h',
         'host/host_key_pair.cc',
         'host/host_key_pair.h',
         'host/host_port_allocator.cc',