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

third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/line-styles/2d.line.join.miter.worker.js

-// DO NOT EDIT! This test has been generated by tools/gentest.py.
-// OffscreenCanvas test in a worker:2d.line.join.miter
-// Description:lineJoin 'miter' is rendered correctly
-// Note:
-
-importScripts("/resources/testharness.js");
-importScripts("/common/canvas-tests.js");
-
-var t = async_test("lineJoin 'miter' is rendered correctly");
-t.step(function() {
-
-var offscreenCanvas = new OffscreenCanvas(100, 50);
-var ctx = offscreenCanvas.getContext('2d');
-
-ctx.fillStyle = '#0f0';
-ctx.fillRect(0, 0, 100, 50);
-ctx.lineJoin = 'miter';
-ctx.lineWidth = 20;
-ctx.fillStyle = '#f00';
-ctx.strokeStyle = '#0f0';
-ctx.fillStyle = '#f00';
-ctx.strokeStyle = '#0f0';
-ctx.fillRect(10, 10, 30, 20);
-ctx.fillRect(20, 10, 20, 30);
-ctx.beginPath();
-ctx.moveTo(10, 20);
-ctx.lineTo(30, 20);
-ctx.lineTo(30, 40);
-ctx.stroke();
-ctx.fillStyle = '#0f0';
-ctx.strokeStyle = '#f00';
-ctx.beginPath();
-ctx.moveTo(60, 20);
-ctx.lineTo(80, 20);
-ctx.lineTo(80, 40);
-ctx.stroke();
-ctx.fillRect(60, 10, 30, 20);
-ctx.fillRect(70, 10, 20, 30);
-_assertPixel(offscreenCanvas, 38,12, 0,255,0,255, "38,12", "0,255,0,255");
-_assertPixel(offscreenCanvas, 39,11, 0,255,0,255, "39,11", "0,255,0,255");
-_assertPixel(offscreenCanvas, 40,10, 0,255,0,255, "40,10", "0,255,0,255");
-_assertPixel(offscreenCanvas, 41,9, 0,255,0,255, "41,9", "0,255,0,255");
-_assertPixel(offscreenCanvas, 42,8, 0,255,0,255, "42,8", "0,255,0,255");
-_assertPixel(offscreenCanvas, 88,12, 0,255,0,255, "88,12", "0,255,0,255");
-_assertPixel(offscreenCanvas, 89,11, 0,255,0,255, "89,11", "0,255,0,255");
-_assertPixel(offscreenCanvas, 90,10, 0,255,0,255, "90,10", "0,255,0,255");
-_assertPixel(offscreenCanvas, 91,9, 0,255,0,255, "91,9", "0,255,0,255");
-_assertPixel(offscreenCanvas, 92,8, 0,255,0,255, "92,8", "0,255,0,255");
-
-t.done();
-
-});
-done();