options: Remove a bunch of useless:

chrome/browser/resources/options/alert_overlay.js

Index: chrome/browser/resources/options/alert_overlay.js
diff --git a/chrome/browser/resources/options/alert_overlay.js b/chrome/browser/resources/options/alert_overlay.js
index aab11765e671258cfa6e6977e7087ed7ab76f7e4..a4bf51b35f533225e04847c4e74a65d55931526d 100644
--- a/chrome/browser/resources/options/alert_overlay.js
+++ b/chrome/browser/resources/options/alert_overlay.js
@@ -27,9 +27,7 @@ cr.define('options', function() {
      */
     canShow_: false,
 
-    /**
-     * Initialize the page.
-     */
+    /** @override */
     initializePage: function() {
       // Call base class implementation to start preference initialization.
       OptionsPage.prototype.initializePage.call(this);
@@ -78,6 +76,7 @@ cr.define('options', function() {
 
     /**
      * The page is getting hidden. Don't let it be shown again.
+     * @override
      */
     willHidePage: function() {
       canShow_ = false;