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..373e28230af061d0b65a6892ccea746fd944c7fa 100644
--- a/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js
+++ b/chrome/browser/resources/chromeos/quick_unlock/pin_keyboard.js
@@ -127,12 +127,21 @@ 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' : '';

[jdufault, 2016/08/25 23:57:26]

Can these type of toggles be done by using an attribute binding?

html:

  <foo has-content=[[hasContent(value)]]>

css:
  foo[has-content] {}

[sammiequon, 2016/08/26 01:20:44]

Done.

+  },
+
+  /**
+   * Disables the submit and backspace button if nothing is entered.
+   * @param {string} value
+   * @private
+   */
+  hasInput_: function(value) {
+    return value.length > 0;
   },
 
   /**
@@ -178,7 +187,7 @@ Polymer({
    * @param {boolean} submitEnabled
    * @private
    */
-  getSubmitHiddenClass_: function(submitEnabled) {
+  getSubmitClass_: function(submitEnabled) {
     return submitEnabled ? '' : 'submit-button-hidden';
   }
 });