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

third_party/polymer/v1_0/components/iron-autogrow-textarea/.bower.json

 {
   "name": "iron-autogrow-textarea",
-  "version": "1.0.1",
+  "version": "1.0.3",
   "description": "A textarea element that automatically grows with input",
   "authors": [
     "The Polymer Authors"
   ],
   "keywords": [
     "web-components",
     "polymer",
     "input",
     "textarea"
   ],
   "main": [
     "iron-autogrow-textarea.html"
   ],
   "private": true,
   "repository": {
     "type": "git",
     "url": "git://github.com/PolymerElements/iron-autogrow-textarea.git"
   },
   "license": "http://polymer.github.io/LICENSE.txt",
   "homepage": "https://github.com/PolymerElements/iron-autogrow-textarea",
   "ignore": [],
   "dependencies": {
+    "iron-behaviors": "PolymerElements/iron-behaviors#^1.0.0",
     "iron-flex-layout": "PolymerElements/iron-flex-layout#^1.0.0",
     "iron-validatable-behavior": "PolymerElements/iron-validatable-behavior#^1.0.0",
+    "iron-form-element-behavior": "PolymerElements/iron-form-element-behavior#^1.0.0",
     "polymer": "Polymer/polymer#^1.0.0"
   },
   "devDependencies": {
     "iron-component-page": "PolymerElements/iron-component-page#^1.0.0",
+    "iron-test-helpers": "PolymerElements/iron-test-helpers#^1.0.0",
     "test-fixture": "PolymerElements/test-fixture#^1.0.0",
     "web-component-tester": "*",
     "paper-styles": "PolymerElements/paper-styles#^1.0.0",
     "webcomponentsjs": "webcomponents/webcomponentsjs#^0.7.0"
   },
-  "_release": "1.0.1",
+  "_release": "1.0.3",
   "_resolution": {
     "type": "version",
-    "tag": "v1.0.1",
-    "commit": "e2bd6f5e964d032beccacabbccb63f93c73f74c0"
+    "tag": "v1.0.3",
+    "commit": "9eae088ce72a31b0baf44e6cdc183e5b73014af5"
   },
   "_source": "git://github.com/PolymerElements/iron-autogrow-textarea.git",
-  "_target": "^1.0.0",
+  "_target": "~1.0.0",
   "_originalSource": "PolymerElements/iron-autogrow-textarea"
 }