Lock screen pin keyboard ui upgrades.

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 9b9ba5dad8b5dc2ba8c528ddea38566061751d5e..56cf0947aa89bb11fa2b52b09f770e81f276fc84 100644
--- a/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js
+++ b/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js
@@ -47,6 +47,14 @@ Polymer({
       value: false
     },
 
+    /**
+     * Whether or not to show an error.
+     */
+    errorMessage: {
+      type: String,
+      value: ''
+    },
+
     /** The value stored in the keyboard's input element. */
     value: {
       type: String,
@@ -127,12 +135,21 @@ Polymer({
   },
 
   /**
-   * Changes the color of the submit button if PIN is ready.
+   * Changes the color of the input text if it is not empty.
    * @param {string} value
    * @private
    */
-  getSubmitClass_: function(value) {
-    return value.length > 0 ? 'ready-background' : '';
+  getContentClass_: function(value) {
+    return value.length > 0 ? 'has-content' : '';
+  },
+
+  /**
+   * Disables the submit and backspace button if nothing is entered.
+   * @param {string} value
+   * @private
+   */
+  hasInput_: function(value) {
+    return value.length > 0;
   },
 
   /**
@@ -156,6 +173,32 @@ Polymer({
   },
 
   /**
+   * Hides the error message div if no error is to be shown.
+   * @param {string} errorMessage
+   * @private
+   */
+  hasErrorMessage_: function(errorMessage) {
+    return errorMessage.length > 0;
+  },
+
+  /**
+   * Computes the whether the error message should be shown.
+   * @param {boolean} errorMessage
+   * @private
+   */
+  getErrorClass_: function(errorMessage) {
+    return errorMessage.length > 0 ? 'error-show' : '';
+  },
+
+  /**
+   * Computes the direction of the errorMessage.

[jdufault, 2016/08/22 20:56:40]

nit: error message

[sammiequon, 2016/08/23 17:30:18]

Done.

+   * @private
+   */
+  getErrorDirection_: function() {
+    return document.dir == 'rtl' ? 'error-rtl' : '';
+  },
+
+  /**
    * Computes the direction of the pin input.
    * @param {string} password
    * @private
@@ -178,7 +221,7 @@ Polymer({
    * @param {boolean} submitEnabled
    * @private
    */
-  getSubmitHiddenClass_: function(submitEnabled) {
+  getSubmitClass_: function(submitEnabled) {
     return submitEnabled ? '' : 'submit-button-hidden';
   }
 });