Update polymer 1.0 install to pick up newly added elements.

polymer_1.0.4/bower_components/paper-menu-button/paper-menu-button-animations.html

+<!--
+@license
+Copyright (c) 2015 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
+-->
+
+<link rel="import" href="../polymer/polymer.html">
+<link rel="import" href="../neon-animation/web-animations.html">
+<link rel="import" href="../neon-animation/neon-animation-behavior.html">
+<script>
+  Polymer({
+    is: 'paper-menu-grow-height-animation',
+
+    behaviors: [
+      Polymer.NeonAnimationBehavior
+    ],
+
+    configure: function(config) {
+      var node = config.node;
+      var rect = node.getBoundingClientRect();
+      var height = rect.height;
+
+      this._effect = new KeyframeEffect(node, [{
+        height: (height / 2) + 'px'
+      }, {
+        height: height + 'px'
+      }], this.timingFromConfig(config));
+
+      return this._effect;
+    }
+  });
+
+  Polymer({
+    is: 'paper-menu-grow-width-animation',
+
+    behaviors: [
+      Polymer.NeonAnimationBehavior
+    ],
+
+    configure: function(config) {
+      var node = config.node;
+      var rect = node.getBoundingClientRect();
+      var width = rect.width;
+
+      this._effect = new KeyframeEffect(node, [{
+        width: (width / 2) + 'px'
+      }, {
+        width: width + 'px'
+      }], this.timingFromConfig(config));
+
+      return this._effect;
+    }
+  });
+
+  Polymer({
+    is: 'paper-menu-shrink-width-animation',
+
+    behaviors: [
+      Polymer.NeonAnimationBehavior
+    ],
+
+    configure: function(config) {
+      var node = config.node;
+      var rect = node.getBoundingClientRect();
+      var width = rect.width;
+
+      this._effect = new KeyframeEffect(node, [{
+        width: width + 'px'
+      }, {
+        width: width - (width / 20) + 'px'
+      }], this.timingFromConfig(config));
+
+      return this._effect;
+    }
+  });
+
+  Polymer({
+    is: 'paper-menu-shrink-height-animation',
+
+    behaviors: [
+      Polymer.NeonAnimationBehavior
+    ],
+
+    configure: function(config) {
+      var node = config.node;
+      var rect = node.getBoundingClientRect();
+      var height = rect.height;
+      var top = rect.top;
+
+      this.setPrefixedProperty(node, 'transformOrigin', '0 0');
+
+      this._effect = new KeyframeEffect(node, [{
+        height: height + 'px',
+        transform: 'translateY(0)'
+      }, {
+        height: height / 2 + 'px',
+        transform: 'translateY(-20px)'
+      }], this.timingFromConfig(config));
+
+      return this._effect;
+    }
+  });
+</script>
+
+