Disable ability to show passwords when running in Metro.

chrome/browser/resources/options/password_manager.js

Index: chrome/browser/resources/options/password_manager.js
diff --git a/chrome/browser/resources/options/password_manager.js b/chrome/browser/resources/options/password_manager.js
index 53021e1ba973dcb31f5c10b44f7c72587aa48fb9..3006ac63fdda783a200fe369d8b7b25485d59991 100644
--- a/chrome/browser/resources/options/password_manager.js
+++ b/chrome/browser/resources/options/password_manager.js
@@ -184,6 +184,15 @@ cr.define('options', function() {
     },
 
     /**
+     * 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.savedPasswordsList_.disableShowPassword();
+    },
+
+    /**
      * Reveals the password for a saved password entry. This is called by the
      * backend after it has authenticated the user.
      * @param {number} index The original index of the entry in the model.
@@ -233,7 +242,8 @@ cr.define('options', function() {
   [
     'setSavedPasswordsList',
     'setPasswordExceptionsList',
-    'showPassword'
+    'showPassword',
+    'disableShowPassword'
    ].forEach(function(name) {
      PasswordManager[name] = function() {
       var instance = PasswordManager.getInstance();