Added more typechecking functions and unit tests for existing code.

remoting/webapp/crd/js/host.js

Index: remoting/webapp/crd/js/host.js
diff --git a/remoting/webapp/crd/js/host.js b/remoting/webapp/crd/js/host.js
index 59129b1dfc2f3f0cbcd56e287e9b8b1a3806e040..0d9ffe859ce11c605c047d9a59cef80f35593b7c 100644
--- a/remoting/webapp/crd/js/host.js
+++ b/remoting/webapp/crd/js/host.js
@@ -84,10 +84,10 @@ remoting.Host.Options.prototype.load = function() {
       // TODO(kelvinp): Uses a separate host options for app-remoting that
       // hardcodes resizeToClient to true.
       that.resizeToClient =
-          getBooleanAttr(options, 'resizeToClient', true);
-      that.shrinkToFit = getBooleanAttr(options, 'shrinkToFit', true);
-      that.desktopScale = getNumberAttr(options, 'desktopScale', 1);
-      that.remapKeys = getStringAttr(options, 'remapKeys', '');
+          base.getBooleanAttr(options, 'resizeToClient', true);
+      that.shrinkToFit = base.getBooleanAttr(options, 'shrinkToFit', true);
+      that.desktopScale = base.getNumberAttr(options, 'desktopScale', 1);
+      that.remapKeys = base.getStringAttr(options, 'remapKeys', '');
     });
 };