Roll Polymer

third_party/polymer/v1_0/components-chromium/paper-checkbox/paper-checkbox-extracted.js

 Polymer({
       is: 'paper-checkbox',
 
       behaviors: [
         Polymer.PaperCheckedElementBehavior
       ],
 
       hostAttributes: {
         role: 'checkbox',
         'aria-checked': false,
@@ skipping 11 matching lines @@
          * Fired when the checked state changes.
          *
          * @event iron-change
          */
         ariaActiveAttribute: {
           type: String,
           value: 'aria-checked'
         }
       },
 
+      attached: function() {
+        var inkSize = this.getComputedStyleValue('--calculated-paper-checkbox-ink-size');
+        // If unset, compute and set the default `--paper-checkbox-ink-size`.
+        if (inkSize === '-1px') {
+          var checkboxSize = parseFloat(this.getComputedStyleValue('--calculated-paper-checkbox-size'));
+          var defaultInkSize = Math.floor((8 / 3) * checkboxSize);
+
+          // The checkbox and ripple need to have the same parity so that their
+          // centers align.
+          if (defaultInkSize % 2 !== checkboxSize % 2) {
+            defaultInkSize++;
+          }
+
+          this.customStyle['--paper-checkbox-ink-size'] = defaultInkSize + 'px';
+          this.updateStyles();
+        }
+      },
+
       _computeCheckboxClass: function(checked, invalid) {
         var className = '';
         if (checked) {
           className += 'checked ';
         }
         if (invalid) {
           className += 'invalid';
         }
         return className;
       },
 
       _computeCheckmarkClass: function(checked) {
         return checked ? '' : 'hidden';
       },
 
       // create ripple inside the checkboxContainer
       _createRipple: function() {
         this._rippleContainer = this.$.checkboxContainer;
         return Polymer.PaperInkyFocusBehaviorImpl._createRipple.call(this);
       }
 
     });