Disable ability to show passwords when running in Metro.

chrome/browser/resources/options/password_manager_list.js

Index: chrome/browser/resources/options/password_manager_list.js
diff --git a/chrome/browser/resources/options/password_manager_list.js b/chrome/browser/resources/options/password_manager_list.js
index fe6f004af83403ffbddb04bcbf45881bc84e749a..fa3e8f11cbcc640ab6c1b2e9f5988dafeb38f801 100644
--- a/chrome/browser/resources/options/password_manager_list.js
+++ b/chrome/browser/resources/options/password_manager_list.js
@@ -277,6 +277,16 @@ cr.define('options.passwordManager', function() {
       this.redraw();
     },
 
+    /**
+     * Removes the show password button. This is called by the backend when
+     * we are running in an environment that does not support showing
+     * passwords, such as Windows Metro
+     */
+    disableShowPassword: function() {
+      this.showPasswords_ = false;
+      this.redraw();
+    },
+
     /** @override */
     createItem: function(entry) {
       return new PasswordListItem(this.dataModel, entry, this.showPasswords_);