Improve HRD first run experience

remoting/webapp/base/js/base.js

Index: remoting/webapp/base/js/base.js
diff --git a/remoting/webapp/base/js/base.js b/remoting/webapp/base/js/base.js
index 11bd091acf0ca9d5397e91db878a399403450da9..aa0b3a59a876bf10b9e5febc3717109257f39556 100644
--- a/remoting/webapp/base/js/base.js
+++ b/remoting/webapp/base/js/base.js
@@ -469,6 +469,19 @@ base.generateXsrfToken = function() {
 };
 
 /**
+ * @return {Object.<string, string>} The URL parameters.
+ */
+base.getUrlParameters = function() {
+  var result = {};
+  var parts = window.location.search.substring(1).split('&');
+  for (var i = 0; i < parts.length; i++) {
+    var pair = parts[i].split('=');
+    result[pair[0]] = decodeURIComponent(pair[1]);
+  }
+  return result;
+}
+
+/**
  * @param {string} jsonString A JSON-encoded string.
  * @return {Object|undefined} The decoded object, or undefined if the string
  *     cannot be parsed.