Update bower.json for Polymer elements and add PRESUBMIT.py

third_party/polymer/v1_0/components/neon-animation/animations/scale-up-animation.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
 -->
 
@@ skipping 27 matching lines @@
       Polymer.NeonAnimationBehavior
     ],
 
     configure: function(config) {
       var node = config.node;
 
       if (config.transformOrigin) {
         this.setPrefixedProperty(node, 'transformOrigin', config.transformOrigin);
       }
 
+      var scaleProperty = 'scale(0)';
+      if (config.axis === 'x') {
+        scaleProperty = 'scale(0, 1)';
+      } else if (config.axis === 'y') {
+        scaleProperty = 'scale(1, 0)';
+      }
+
       this._effect = new KeyframeEffect(node, [
-        {'transform': 'scale(0)'},
-        {'transform': 'scale(1)'}
+        {'transform': scaleProperty},
+        {'transform': 'scale(1, 1)'}
       ], this.timingFromConfig(config));
 
       return this._effect;
     }
 
   });
 
 </script>