Submit button does not show up on md-settings anymore.

chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js

Index: chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js
diff --git a/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js b/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js
index 54846ba3961c0d4cd01abaf0046312a21d1fa9b8..dddc25459f85a8a2cb3fb71a4a865d6f43a0e5a3 100644
--- a/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js
+++ b/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js
@@ -39,6 +39,14 @@ Polymer({
       value: false
     },
 
+    /**
+     * Whether or not the keyboard's submit button should be shown.
+     */
+    enableSubmitButton: {
+      type: Boolean,
+      value: false
+    },
+
     /** The value stored in the keyboard's input element. */
     value: {
       type: String,
@@ -121,6 +129,7 @@ Polymer({
   /**
    * Changes the color of the submit button if PIN is ready.
    * @param {string} value
+   * @private
    */
   computeSubmitClass_: function(value) {
     return value.length > 0 ? 'ready-background' : '';
@@ -129,6 +138,7 @@ Polymer({
   /**
    * Computes whether the input type for the pin input should be password or
    * numerical.
+   * @param {bool} enablePassword

[jdufault, 2016/07/29 19:12:13]

boolean for all of these

[sammiequon, 2016/07/29 19:44:49]

Done.

    * @private
    */
   computeInputType_: function(enablePassword) {
@@ -137,6 +147,7 @@ Polymer({
 
   /**
    * Computes the value of the pin input placeholder.
+   * @param {bool} enablePassword
    * @private
    */
   computeInputPlaceholder_: function(enablePassword) {
@@ -146,6 +157,7 @@ Polymer({
 
   /**
    * Computes the direction of the pin input.
+   * @param {string} password
    * @private
    */
   computeInputClass_: function(password) {
@@ -159,5 +171,14 @@ Polymer({
     // (just numbers), if the document direction is rtl.
     var enableRtl = (document.dir == 'rtl') && !Number.isInteger(+password);
     return enableRtl ? 'input-non-pin' : '';
+  },
+
+  /**
+   * Computes if the submit button is visible.
+   * @param {bool} submitEnabled
+   * @private
+   */
+  computeSubmitHiddenClass_: function(submitEnabled) {
+    return submitEnabled ? '' : 'submit-button-hidden';
   }
 });