update polymer js to 0.4.0

pkg/template_binding/lib/js/patches_mdv.js

+/*
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+
+(function(scope) {
+
+// inject style sheet
+var style = document.createElement('style');
+style.textContent = 'template {display: none !important;} /* injected by platform.js */';
+var head = document.querySelector('head');
+head.insertBefore(style, head.firstChild);
+
+// flush (with logging)
+var flushing;
+function flush() {
+  if (!flushing) {
+    flushing = true;
+    scope.endOfMicrotask(function() {
+      flushing = false;
+      logFlags.data && console.group('Platform.flush()');
+      scope.performMicrotaskCheckpoint();
+      logFlags.data && console.groupEnd();
+    });
+  }
+};
+
+// polling dirty checker
+// flush periodically if platform does not have object observe.
+if (!Observer.hasObjectObserve) {
+  var FLUSH_POLL_INTERVAL = 125;
+  window.addEventListener('WebComponentsReady', function() {
+    flush();
+    scope.flushPoll = setInterval(flush, FLUSH_POLL_INTERVAL);
+  });
+} else {
+  // make flush a no-op when we have Object.observe
+  flush = function() {};
+}
+
+if (window.CustomElements && !CustomElements.useNative) {
+  var originalImportNode = Document.prototype.importNode;
+  Document.prototype.importNode = function(node, deep) {
+    var imported = originalImportNode.call(this, node, deep);
+    CustomElements.upgradeAll(imported);
+    return imported;
+  }
+}
+
+// exports
+scope.flush = flush;
+
+})(window.Platform);
+