Roll Polymer from 1.5.0 -> 1.6.0 to pick up native CSS custom props

third_party/polymer/v1_0/components-chromium/paper-behaviors/paper-ripple-behavior-extracted.js

 /**
    * `Polymer.PaperRippleBehavior` dynamically implements a ripple
    * when the element has focus via pointer or keyboard.
    *
    * NOTE: This behavior is intended to be used in conjunction with and after
    * `Polymer.IronButtonState` and `Polymer.IronControlState`.
    *
    * @polymerBehavior Polymer.PaperRippleBehavior
    */
   Polymer.PaperRippleBehavior = {
-
     properties: {
       /**
        * If true, the element will not produce a ripple effect when interacted
        * with via the pointer.
        */
       noink: {
         type: Boolean,
         observer: '_noinkChanged'
       },
 
@@ skipping 80 matching lines @@
     _createRipple: function() {
       return /** @type {!PaperRippleElement} */ (
           document.createElement('paper-ripple'));
     },
 
     _noinkChanged: function(noink) {
       if (this.hasRipple()) {
         this._ripple.noink = noink;
       }
     }
-
   };