Add disconnect_window.xib in the It2Me NM host bundle.

BUG=397261

Review URL: https://codereview.chromium.org/416333009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285784 0039d316-1c4b-4281-b951-d872f2087c98

remoting/remoting_host.gypi

@@ -798,6 +798,7 @@
               },
               'mac_bundle_resources': [
                 '<(PRODUCT_DIR)/icudtl.dat',
+                'host/disconnect_window.xib',
                 'host/it2me/remote_assistance_host-Info.plist',
                 '<!@pymod_do_main(remoting_copy_locales -o -p <(OS) -x <(PRODUCT_DIR) <(remoting_locales))',