Added ability to list and delete hosts with GCD.

remoting/webapp/crd/js/gcd_client.js

Index: remoting/webapp/crd/js/gcd_client.js
diff --git a/remoting/webapp/crd/js/gcd_client.js b/remoting/webapp/crd/js/gcd_client.js
index 5417737253bc796e31a1dafa3897186b5e40ab82..173a10aac9a98000099cad1d5e6383b789b875d4 100644
--- a/remoting/webapp/crd/js/gcd_client.js
+++ b/remoting/webapp/crd/js/gcd_client.js
@@ -32,7 +32,8 @@ remoting.gcd.RegistrationTicket;
 /**
  * TODO: Flesh out with typical fields.
  * @typedef {{
- *   id:string
+ *   id:string,
+ *   name:string
  * }}
  */
 remoting.gcd.Device;
@@ -206,12 +207,18 @@ remoting.gcd.Client.prototype.finalizeRegistrationTicket = function(ticketId) {
 /**
  * Lists devices user has access to.
  * TODO: Add link to GCD docs.
+ * @param {string=} opt_nameSubstring If present, the list of devices
+ *     is filtered by GCD such that every device returned contains
+ *     this string as as a substring of its |name| or |displayName|.
  * @return {!Promise<!Array<remoting.gcd.Device>>}
  */
-remoting.gcd.Client.prototype.listDevices = function() {
+remoting.gcd.Client.prototype.listDevices = function(opt_nameSubstring) {
   return new remoting.Xhr({
     method: 'GET',
     url: this.apiBaseUrl_ + '/devices',
+    urlParams: {
+      nameSubstring: opt_nameSubstring || null
+    },
     useIdentity: true,
     acceptJson: true
   }).start().then(function(response) {
@@ -241,7 +248,7 @@ remoting.gcd.Client.prototype.deleteDevice = function(deviceId) {
       return false;
     }
     if (response.isError()) {
-      console.warn('error deleting device');
+      console.error('error deleting device');
       throw remoting.Error.unexpected();
     }
     return true;