Update Polymer from 1.1.4 -> 1.1.5

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:
@@ skipping 146 matching lines @@
       return this._prepareSvgClone(this._icons[id], this.size);
     },
 
     /**
      * @param {Element} sourceSvg
      * @param {number} size
      * @return {Element}
      */
     _prepareSvgClone: function(sourceSvg, size) {
       if (sourceSvg) {
-        var svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
-        svg.setAttribute('viewBox', ['0', '0', size, size].join(' '));
+        var content = sourceSvg.cloneNode(true),
+            svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg'),
+            viewBox = content.getAttribute('viewBox') || '0 0 ' + size + ' ' + size;
+        svg.setAttribute('viewBox', viewBox);
         svg.setAttribute('preserveAspectRatio', 'xMidYMid meet');
         // 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');
+        svg.appendChild(content).removeAttribute('id');
         return svg;
       }
       return null;
     }
 
-  });
+  });