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

third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/shadows/2d.shadow.attributes.shadowColor.invalid.worker.js

Index: third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/shadows/2d.shadow.attributes.shadowColor.invalid.worker.js
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/shadows/2d.shadow.attributes.shadowColor.invalid.worker.js b/third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/shadows/2d.shadow.attributes.shadowColor.invalid.worker.js
deleted file mode 100644
index aad23bd79b62b1ec1ccedd86bd224c04bc5d4022..0000000000000000000000000000000000000000
--- a/third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/shadows/2d.shadow.attributes.shadowColor.invalid.worker.js
+++ /dev/null
@@ -1,31 +0,0 @@
-// DO NOT EDIT! This test has been generated by tools/gentest.py.
-// OffscreenCanvas test in a worker:2d.shadow.attributes.shadowColor.invalid
-// Description:
-// Note:
-
-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');
-
-ctx.shadowColor = '#00ff00';
-ctx.shadowColor = 'bogus';
-_assertSame(ctx.shadowColor, '#00ff00', "ctx.shadowColor", "'#00ff00'");
-ctx.shadowColor = '#00ff00';
-ctx.shadowColor = 'red bogus';
-_assertSame(ctx.shadowColor, '#00ff00', "ctx.shadowColor", "'#00ff00'");
-ctx.shadowColor = '#00ff00';
-ctx.shadowColor = ctx;
-_assertSame(ctx.shadowColor, '#00ff00', "ctx.shadowColor", "'#00ff00'");
-ctx.shadowColor = '#00ff00';
-ctx.shadowColor = undefined;
-_assertSame(ctx.shadowColor, '#00ff00', "ctx.shadowColor", "'#00ff00'");
-
-t.done();
-
-});
-done();