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

third_party/polymer/v1_0/components/paper-drawer-panel/paper-drawer-panel.css

 /**
 @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
+*/
 
-*/
 :host {
   display: block;
   position: absolute;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   overflow: hidden;
 }
 
 iron-selector > #drawer {
   position: absolute;
   top: 0;
   left: 0;
   height: 100%;
   background-color: white;
-  will-change: transform;
+
+  -moz-box-sizing: border-box;
   box-sizing: border-box;
-  -moz-box-sizing: border-box;
 
   @apply(--paper-drawer-panel-drawer-container);
 }
 
 .transition > #drawer {
-  transition: -webkit-transform ease-in-out 0.3s, width ease-in-out 0.3s;
-  transition: transform ease-in-out 0.3s, width ease-in-out 0.3s;
+  transition: -webkit-transform ease-in-out 0.3s, width ease-in-out 0.3s, visibility 0.3s;
+  transition: transform ease-in-out 0.3s, width ease-in-out 0.3s, visibility 0.3s;
 }
 
 .left-drawer > #drawer {
   @apply(--paper-drawer-panel-left-drawer-container);
 }
 
 .right-drawer > #drawer {
   left: auto;
   right: 0;
 
@@ skipping 34 matching lines @@
   top: 0;
   right: 0;
   bottom: 0;
   left: 0;
   visibility: hidden;
   opacity: 0;
   transition: opacity ease-in-out 0.38s, visibility ease-in-out 0.38s;
   background-color: rgba(0, 0, 0, 0.3);
 }
 
+.narrow-layout > #drawer {
+  will-change: transform;
+}
+
 .narrow-layout > #drawer.iron-selected {
   box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.15);
 }
 
 .right-drawer.narrow-layout > #drawer.iron-selected {
   box-shadow: -2px 2px 4px rgba(0, 0, 0, 0.15);
 }
 
 .narrow-layout > #drawer > ::content > [drawer] {
   border: 0;
 }
 
 .left-drawer.narrow-layout > #drawer:not(.iron-selected) {
   -webkit-transform: translateX(-100%);
   transform: translateX(-100%);
 }
 
 .right-drawer.narrow-layout > #drawer:not(.iron-selected) {
   left: auto;
+  visibility: hidden;
+
   -webkit-transform: translateX(100%);
   transform: translateX(100%);
 }
 
+.right-drawer.narrow-layout.dragging > #drawer:not(.iron-selected),
+.right-drawer.narrow-layout.peeking > #drawer:not(.iron-selected) {
+  visibility: visible;
+}
+
 .narrow-layout > #main {
-  left: 0 !important;
   padding: 0;
 }
 
 .right-drawer.narrow-layout > #main {
   left: 0;
   right: 0;
-  padding: 0;
 }
 
 .narrow-layout > #main:not(.iron-selected) > #scrim,
 .dragging > #main > #scrim {
   visibility: visible;
   opacity: var(--paper-drawer-panel-scrim-opacity, 1);
 }
 
 .narrow-layout > #main > * {
   margin: 0;
   min-height: 100%;
   left: 0;
   right: 0;
+
+  -moz-box-sizing: border-box;
   box-sizing: border-box;
-  -moz-box-sizing: border-box;
 }
 
 iron-selector:not(.narrow-layout) #main ::content [paper-drawer-toggle] {
   display: none;
 }