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

third_party/polymer/v1_0/components-chromium/iron-iconset-svg/iron-iconset-svg-extracted.js

 
   /**
    * The `iron-iconset-svg` element allows users to define their own icon sets
    * that contain svg icons. The svg icon elements should be children of the
    * `iron-iconset-svg` element. Multiple icons should be given distinct id's.
    *
    * Using svg elements to create icons has a few advantages over traditional
    * bitmap graphics like jpg or png. Icons that use svg are vector based so they
    * are resolution independent and should look good on any device. They are
    * stylable via css. Icons can be themed, colorized, and even animated.
    *
    * Example:
    *
-   *     <iron-iconset-svg id="my-svg-icons" iconSize="24">
+   *     <iron-iconset-svg name="my-svg-icons" size="24">
    *       <svg>
    *         <defs>
    *           <g id="shape">
    *             <rect x="50" y="50" width="50" height="50" />
    *             <circle cx="50" cy="50" r="50" />
    *           </g>
    *         </defs>
    *       </svg>
    *     </iron-iconset-svg>
    *
@@ skipping 144 matching lines @@
         // TODO(dfreedm): `pointer-events: none` works around https://crbug.com/370136
         // TODO(sjmiles): inline style may not be ideal, but avoids requiring a shadow-root
         svg.style.cssText = 'pointer-events: none; display: block; width: 100%; height: 100%;';
         svg.appendChild(sourceSvg.cloneNode(true)).removeAttribute('id');
         return svg;
       }
       return null;
     }
 
   });