Update Polymer from 1.1.4 -> 1.1.5

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

Index: third_party/polymer/v1_0/components-chromium/iron-iconset-svg/iron-iconset-svg-extracted.js
diff --git a/third_party/polymer/v1_0/components-chromium/iron-iconset-svg/iron-iconset-svg-extracted.js b/third_party/polymer/v1_0/components-chromium/iron-iconset-svg/iron-iconset-svg-extracted.js
index 236096963a97af6e41670fd89a1ad5c08d3a956f..4bca3cc73e1940781c51334e3b21ef05eb7748d9 100644
--- a/third_party/polymer/v1_0/components-chromium/iron-iconset-svg/iron-iconset-svg-extracted.js
+++ b/third_party/polymer/v1_0/components-chromium/iron-iconset-svg/iron-iconset-svg-extracted.js
@@ -1,5 +1,4 @@
-
-  /**
+/**
    * 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.
@@ -166,16 +165,18 @@
      */
     _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;
     }
 
-  });
+  });