Remove 'Enable' button on unsupported platforms. Added 'No hosts' message.

remoting/webapp/host_controller.js

Index: remoting/webapp/host_controller.js
diff --git a/remoting/webapp/host_controller.js b/remoting/webapp/host_controller.js
index 845e65dabec4c10094eeff381036d440b5fdbfcb..f59de30f307cd682cffbb3bfe3c3c8376069be3f 100644
--- a/remoting/webapp/host_controller.js
+++ b/remoting/webapp/host_controller.js
@@ -85,11 +85,8 @@ remoting.HostController.prototype.updateDom = function() {
       remoting.updateModalUi('enabled', 'data-daemon-state');
       break;
     case remoting.HostController.State.NOT_IMPLEMENTED:
-      document.getElementById('start-daemon').disabled = true;
-      document.getElementById('start-daemon-message').innerText =
-          chrome.i18n.getMessage(
-              /*i18n-content*/'HOME_DAEMON_DISABLED_MESSAGE');
-      // No break;
+      document.getElementById('daemon-control').hidden = true;
+      break;
     case remoting.HostController.State.STOPPED:
     case remoting.HostController.State.NOT_INSTALLED:
       remoting.updateModalUi('disabled', 'data-daemon-state');