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

third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/the-offscreen-canvas/size.large.worker.js

Index: third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/the-offscreen-canvas/size.large.worker.js
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/the-offscreen-canvas/size.large.worker.js b/third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/the-offscreen-canvas/size.large.worker.js
deleted file mode 100644
index 797f4ab7a1ddefb4230ea13e04b5ad14777fa1b9..0000000000000000000000000000000000000000
--- a/third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/the-offscreen-canvas/size.large.worker.js
+++ /dev/null
@@ -1,24 +0,0 @@
-// DO NOT EDIT! This test has been generated by tools/gentest.py.
-// OffscreenCanvas test in a worker:size.large
-// Description:
-// Note:<p class="notes">Not sure how reasonable this is, but the spec doesn't say there's an upper limit on the size.
-
-importScripts("/resources/testharness.js");
-importScripts("/common/canvas-tests.js");
-
-var t = async_test("");
-t.step(function() {
-
-var offscreenCanvas = new OffscreenCanvas(100, 50);
-var ctx = offscreenCanvas.getContext('2d');
-
-var n = 2147483647; // 2^31 - 1, which should be supported by any sensible definition of "long"
-offscreenCanvas.width = n;
-offscreenCanvas.height = n;
-_assertSame(offscreenCanvas.width, n, "offscreenCanvas.width", "n");
-_assertSame(offscreenCanvas.height, n, "offscreenCanvas.height", "n");
-
-t.done();
-
-});
-done();