Remove SVGFilterElement's filterRes* attributes and setFilterRes()

LayoutTests/animations/svg-attribute-interpolation/resources/interpolation-test.js

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 'use strict';
 (function() {
   var testCount = 0;
   var animationEventCount = 0;
 
   var durationSeconds = 0.001;
@@ skipping 351 matching lines @@
       elements.push(transform.matrix.f);
     }
     return String(elements);
   }
 
   var svgNamespace = 'http://www.w3.org/2000/svg';
   var xlinkNamespace = 'http://www.w3.org/1999/xlink';
 
   var animatedNumberOptionalNumberAttributes = [
     'baseFrequency',
-    'filterRes',
     'kernelUnitLength',
     'order',
     'radius',
     'stdDeviation',
   ];
 
   function namespacedAttributeName(attributeName) {
     if (attributeName === 'href')
       return 'xlink:href';
     return attributeName;
@@ skipping 20 matching lines @@
 
     var result;
     if (attributeName === 'd')
       result = element['animatedPathSegList'];
     else if (attributeName === 'points')
       result = element['animatedPoints'];
     else
       result = element[attributeName].animVal;
 
     if (!result) {
-      if (attributeName === 'filterResX' || attributeName === 'filterResY')
-        return null;
       if (attributeName === 'pathLength')
         return '0';
       if (attributeName === 'preserveAlpha')
         return 'false';
 
       console.log('Unknown attribute, cannot get ' + element.className.baseVal + ' ' + attributeName);
       return null;
     }
 
     if (result instanceof SVGAngle || result instanceof SVGLength)
@@ skipping 250 matching lines @@
     setTimeout(function() {
       if (finished) {
         return;
       }
       finishTest();
     }, 5000);
   }
 
   window.assertAttributeInterpolation = assertAttributeInterpolation;
 })();