Upstream changes to externs

externs/polymer-externs.js

@@ -78,6 +78,21 @@ function Polymer(init){}
  */
 Polymer.sanitizeDOMValue;
 
+/**
+ * @type {boolean}
+ */
+Polymer.passiveTouchGestures;
+
+/**
+ * @type {boolean}
+ */
+Polymer.strictTemplatePolicy;
+
+/**
+ * @type {boolean}
+ */
+Polymer.allowTemplateFromDomModule;
+
 /**
  * @param {string} string
  * @param {Object} obj
@@ -172,7 +187,7 @@ var PolymerDeepPropertyChange;
  * @constructor
  * @template T
  */
-let DomRepeatEvent = function() {};
+var DomRepeatEvent = function() {};
 
 /**
  * @type {{

externs/webcomponents-externs.js

@@ -12,37 +12,37 @@
  */
 /* eslint-disable */
 
-let HTMLImports = {
+var HTMLImports = {
   /**
    * @param {function()} callback
    */
-  whenReady(callback){},
+  whenReady(callback) {},
   /**
    * @param {Element} element
    * @returns {Document} document
    */
-  importForElement(element){}
+  importForElement(element) {}
 };
 
 window.HTMLImports = HTMLImports;
 
-let ShadyDOM = {
+var ShadyDOM = {
   inUse: false,
-  flush(){},
+  flush() {},
   /**
    * @param {!Node} target
    * @param {function(Array<MutationRecord>, MutationObserver)} callback
    * @return {MutationObserver}
    */
-  observeChildren(target, callback){},
+  observeChildren(target, callback) {},
   /**
    * @param {MutationObserver} observer
    */
-  unobserveChildren(observer){},
+  unobserveChildren(observer) {},
   /**
    * @param {Node} node
    */
-  patch(node){}
+  patch(node) {}
 };
 
 window.ShadyDOM = ShadyDOM;