Added (incomplete) implementation of HostListApi using GCD.

remoting/webapp/crd/js/host_list_api.js

Index: remoting/webapp/crd/js/host_list_api.js
diff --git a/remoting/webapp/crd/js/host_list_api.js b/remoting/webapp/crd/js/host_list_api.js
index 9b63ccb71c38a2a29891257a3ee14eeb1a47e26f..7f0d9dff425235b8584bd035c0e9cb5c69b86070 100644
--- a/remoting/webapp/crd/js/host_list_api.js
+++ b/remoting/webapp/crd/js/host_list_api.js
@@ -7,11 +7,13 @@
  * API for host-list management.
  */
 
-'use strict';
-
 /** @suppress {duplicate} */
 var remoting = remoting || {};
 
+(function() {
+
+'use strict';
+
 /** @interface */
 remoting.HostListApi = function() {
 };
@@ -20,7 +22,7 @@ remoting.HostListApi = function() {
  * @param {string} newHostId
  * @param {string} hostName
  * @param {string} publicKey
- * @param {?string} hostClientId
+ * @param {string} hostClientId
  * @return {!Promise<string>} An OAuth2 auth code or the empty string.
  */
 remoting.HostListApi.prototype.register;

[Jamie, 2015/04/22 23:46:01]

This method is not implemented by remoting.HostListApiImpl, and should be
declared as an empty function like all the other methods. It also needs better
documentation.

[John Williams, 2015/04/23 23:55:42]

It's implemented by remoting.HostListApiImpl since issue #1098563002.

I added comments and an empty function.

@@ -53,3 +55,30 @@ remoting.HostListApi.prototype.put =
  */
 remoting.HostListApi.prototype.remove = function(hostId) {
 };
+
+/**
+ * @private {remoting.HostListApi}
+ */
+var instance = null;
+
+/**
+ * @return {!remoting.HostListApi}
+ */
+remoting.HostListApi.getInstance = function() {
+  if (instance == null) {
+    instance = remoting.settings.USE_GCD ?
+        new remoting.HostListApiGcdImpl() :
+        new remoting.HostListApiImpl();
+  }
+  return instance;
+};
+
+/**
+ * For testing.
+ * @param {remoting.HostListApi} newInstance
+ */
+remoting.HostListApi.setInstance = function(newInstance) {
+  instance = newInstance;
+};
+
+})();