Add Closure compiling instructions for site_list.

chrome/browser/resources/settings/site_settings/site_list.js

Index: chrome/browser/resources/settings/site_settings/site_list.js
diff --git a/chrome/browser/resources/settings/site_settings/site_list.js b/chrome/browser/resources/settings/site_settings/site_list.js
index 613008a45b174e9debbf7b4933dd693a7e82014e..55f64b73463792c6fcc4563e3a7fd0f869811424 100644
--- a/chrome/browser/resources/settings/site_settings/site_list.js
+++ b/chrome/browser/resources/settings/site_settings/site_list.js
@@ -143,7 +143,8 @@ Polymer({
         this.computeCategoryExceptionsPrefName(this.category));
     var sites = pref.value;
     for (var origin in sites) {
-      if (sites[origin].setting == this.categorySubtype) {
+      var site = /** @type {{setting: number}} */(sites[origin]);
+      if (site.setting == this.categorySubtype) {
         var tokens = origin.split(',');
         newList.push({url: tokens[0]});
       }
@@ -166,6 +167,7 @@ Polymer({
 
   /**
    * A handler for selecting a site (by clicking on the origin).
+   * @param {!{model: !{item: !{url: string}}}} event

[Dan Beam, 2015/11/11 23:18:39]

this should probably be {Event}

    * @private
    */
   onOriginTap_: function(event) {

[Dan Beam, 2015/11/11 23:18:39]

and this should probably be

var model = /** @type {Object<Polymer.Base>} */(event.model);

https://github.com/Polymer/polymer/blob/f58d9faf54948c8df300eedd2379459e82ffc...

[michaelpg, 2015/11/20 14:26:55]

I think you mean (event['model']). if you @param event as an {Event}, model
isn't a valid property
The annotation you linked to doesn't even seem correct -- shouldn't it @return a
{Polymer.Base}, not an {Object<Polymer.Base>}?

Besides which, typing it as such isn't particularly helpful because we're
interested in the "item" property of this particular Polymer.Base, which is not
a property of Polymer.Base's in general.

@@ -182,7 +184,7 @@ Polymer({
 
   /**
    * Returns the appropriate header value for display.
-   * @param {array<string>} siteList The list of all sites to display for this
+   * @param {Array<string>} siteList The list of all sites to display for this
    *     category subtype.
    * @param {boolean} toggleState The state of the global toggle for this
    *     category.
@@ -213,7 +215,7 @@ Polymer({
 
   /**
    * Returns whether to show the site list.
-   * @param {array} siteList The list of all sites to display for this category
+   * @param {Array} siteList The list of all sites to display for this category
    *     subtype.
    * @param {boolean} toggleState The state of the global toggle for this
    *     category.