Add offscreen-canvas to the list of wpt directories to skip.

third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/pixel-manipulation/2d.imageData.create2.nonfinite.worker.js

-// DO NOT EDIT! This test has been generated by tools/gentest.py.
-// OffscreenCanvas test in a worker:2d.imageData.create2.nonfinite
-// Description:createImageData() throws TypeError if arguments are not finite
-// Note:
-
-importScripts("/resources/testharness.js");
-importScripts("/common/canvas-tests.js");
-
-var t = async_test("createImageData() throws TypeError if arguments are not finite");
-t.step(function() {
-
-var offscreenCanvas = new OffscreenCanvas(100, 50);
-var ctx = offscreenCanvas.getContext('2d');
-
-assert_throws(new TypeError(), function() { ctx.createImageData(Infinity, 10); });
-assert_throws(new TypeError(), function() { ctx.createImageData(-Infinity, 10); });
-assert_throws(new TypeError(), function() { ctx.createImageData(NaN, 10); });
-assert_throws(new TypeError(), function() { ctx.createImageData(10, Infinity); });
-assert_throws(new TypeError(), function() { ctx.createImageData(10, -Infinity); });
-assert_throws(new TypeError(), function() { ctx.createImageData(10, NaN); });
-assert_throws(new TypeError(), function() { ctx.createImageData(Infinity, Infinity); });
-var posinfobj = { valueOf: function() { return Infinity; } },
-    neginfobj = { valueOf: function() { return -Infinity; } },
-    nanobj = { valueOf: function() { return -Infinity; } };
-assert_throws(new TypeError(), function() { ctx.createImageData(posinfobj, 10); });
-assert_throws(new TypeError(), function() { ctx.createImageData(neginfobj, 10); });
-assert_throws(new TypeError(), function() { ctx.createImageData(nanobj, 10); });
-assert_throws(new TypeError(), function() { ctx.createImageData(10, posinfobj); });
-assert_throws(new TypeError(), function() { ctx.createImageData(10, neginfobj); });
-assert_throws(new TypeError(), function() { ctx.createImageData(10, nanobj); });
-assert_throws(new TypeError(), function() { ctx.createImageData(posinfobj, posinfobj); });
-
-t.done();
-
-});
-done();