Update PolymerElements/iron-a11y-keys-behavior for ESC key fix

third_party/polymer/v1_0/components-chromium/iron-a11y-keys-behavior/iron-a11y-keys-behavior-extracted.js

Index: third_party/polymer/v1_0/components-chromium/iron-a11y-keys-behavior/iron-a11y-keys-behavior-extracted.js
diff --git a/third_party/polymer/v1_0/components-chromium/iron-a11y-keys-behavior/iron-a11y-keys-behavior-extracted.js b/third_party/polymer/v1_0/components-chromium/iron-a11y-keys-behavior/iron-a11y-keys-behavior-extracted.js
index 017333bc1da0e8ca3491ee91ad4a6f8a1df387e0..b66971ebdaaca8e96b00f8f6437dd266562602cf 100644
--- a/third_party/polymer/v1_0/components-chromium/iron-a11y-keys-behavior/iron-a11y-keys-behavior-extracted.js
+++ b/third_party/polymer/v1_0/components-chromium/iron-a11y-keys-behavior/iron-a11y-keys-behavior-extracted.js
@@ -78,6 +78,13 @@
     var SPACE_KEY = /^space(bar)?/;
 
     /**
+     * Matches ESC key.
+     *
+     * Value from: http://w3c.github.io/uievents-key/#key-Escape
+     */
+    var ESC_KEY = /^escape$/;
+
+    /**
      * Transforms the key.
      * @param {string} key The KeyBoardEvent.key
      * @param {Boolean} [noSpecialChars] Limits the transformation to
@@ -89,6 +96,8 @@
         var lKey = key.toLowerCase();
         if (lKey === ' ' || SPACE_KEY.test(lKey)) {
           validKey = 'space';
+        } else if (ESC_KEY.test(lKey)) {
+          validKey = 'esc';
         } else if (lKey.length == 1) {
           if (!noSpecialChars || KEY_CHAR.test(lKey)) {
             validKey = lKey;
@@ -132,10 +141,10 @@
           validKey = 'f' + (keyCode - 112);
         } else if (keyCode >= 48 && keyCode <= 57) {
           // top 0-9 keys
-          validKey = String(48 - keyCode);
+          validKey = String(keyCode - 48);
         } else if (keyCode >= 96 && keyCode <= 105) {
           // num pad 0-9
-          validKey = String(96 - keyCode);
+          validKey = String(keyCode - 96);
         } else {
           validKey = KEY_CODE[keyCode];
         }
@@ -300,6 +309,13 @@
         this._resetKeyEventListeners();
       },
 
+      /**
+       * Returns true if a keyboard event matches `eventString`.
+       *
+       * @param {KeyboardEvent} event
+       * @param {string} eventString
+       * @return {boolean}
+       */
       keyboardEventMatchesKeys: function(event, eventString) {
         var keyCombos = parseEventString(eventString);
         for (var i = 0; i < keyCombos.length; ++i) {