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

third_party/polymer/v1_0/components-chromium/iron-test-helpers/test-helpers.js

Index: third_party/polymer/v1_0/components-chromium/iron-test-helpers/test-helpers.js
diff --git a/third_party/polymer/v1_0/components-chromium/iron-test-helpers/test-helpers.js b/third_party/polymer/v1_0/components-chromium/iron-test-helpers/test-helpers.js
index b48bbb9ba8742cf4e7ce71566c74d50e8eaf4f10..7507b1868d2a77c95592367d0aef5353017c4294 100644
--- a/third_party/polymer/v1_0/components-chromium/iron-test-helpers/test-helpers.js
+++ b/third_party/polymer/v1_0/components-chromium/iron-test-helpers/test-helpers.js
@@ -10,7 +10,8 @@
 (function(global) {
   'use strict';
 
-  /*
+
+  /**
    * Forces distribution of light children, and lifecycle callbacks on the
    * Custom Elements polyfill. Used when testing elements that rely on their
    * distributed children.
@@ -22,7 +23,7 @@
     window.CustomElements && window.CustomElements.takeRecords();
   };
 
-  /*
+  /**
    * Stamps and renders a `dom-if` template.
    *
    * @param {HTMLElement} node The node containing the template,
@@ -36,10 +37,10 @@
     global.flushAsynchronousOperations();
   };
 
-  /*
+  /**
    * Fires a custom event on a specific node. This event bubbles and is cancellable.
    *
-   * @param {String} type The type of event.
+   * @param {string} type The type of event.
    * @param {Object} props Any custom properties the event contains.
    * @param {HTMLElement} node The node to fire the event on.
    */
@@ -54,7 +55,7 @@
     node.dispatchEvent(event);
   };
 
-  /*
+  /**
    * Skips a test unless a condition is met. Sample use:
    *    function isNotIE() {
    *      return !navigator.userAgent.match(/MSIE/i);
@@ -63,7 +64,7 @@
    *      ...
    *    });
    *
-   * @param {String} condition The name of a Boolean function determining if the test should be run.
+   * @param {Function} condition The name of a Boolean function determining if the test should be run.
    * @param {Function} test The test to be run.
    */
 
@@ -86,4 +87,11 @@
       return result;
     };
   };
+
+  global.TestHelpers = {
+    flushAsynchronousOperations: global.flushAsynchronousOperations,
+    forceXIfStamp: global.forceXIfStamp,
+    fireEvent: global.fireEvent,
+    skipUnless: global.skipUnless
+  };
 })(this);