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

third_party/polymer/v1_0/components-chromium/polymer/polymer-micro-extracted.js

Index: third_party/polymer/v1_0/components-chromium/polymer/polymer-micro-extracted.js
diff --git a/third_party/polymer/v1_0/components-chromium/polymer/polymer-micro-extracted.js b/third_party/polymer/v1_0/components-chromium/polymer/polymer-micro-extracted.js
index 7b7b84d7e279f7a8829c1ff661f2df8af0a17c0c..746f398a89d44014a4fb78300ce363e1275933d5 100644
--- a/third_party/polymer/v1_0/components-chromium/polymer/polymer-micro-extracted.js
+++ b/third_party/polymer/v1_0/components-chromium/polymer/polymer-micro-extracted.js
@@ -117,6 +117,12 @@ this.copyOwnProperty(n, api, prototype);
 }
 return prototype || api;
 },
+mixin: function (target, source) {
+for (var i in source) {
+target[i] = source[i];
+}
+return target;
+},
 copyOwnProperty: function (name, source, target) {
 var pd = Object.getOwnPropertyDescriptor(source, name);
 if (pd) {
@@ -492,7 +498,7 @@ debouncer.stop();
 }
 }
 });
-Polymer.version = '1.0.3';
+Polymer.version = '1.0.5';
 Polymer.Base._addFeature({
 _registerFeatures: function () {
 this._prepIs();