Import wpt@5915964199b07226bf6d8fbb177a63b1f272907a

third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/the-canvas-state/2d.state.saverestore.underflow.worker.js

Index: third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/the-canvas-state/2d.state.saverestore.underflow.worker.js
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/the-canvas-state/2d.state.saverestore.underflow.worker.js b/third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/the-canvas-state/2d.state.saverestore.underflow.worker.js
new file mode 100644
index 0000000000000000000000000000000000000000..150a31cf052ebd84a6af418378f61d2434786654
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/the-canvas-state/2d.state.saverestore.underflow.worker.js
@@ -0,0 +1,24 @@
+// DO NOT EDIT! This test has been generated by tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.state.saverestore.underflow
+// Description:restore() with an empty stack has no effect
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/common/canvas-tests.js");
+
+var t = async_test("restore() with an empty stack has no effect");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+for (var i = 0; i < 16; ++i)
+    ctx.restore();
+ctx.lineWidth = 0.5;
+ctx.restore();
+_assertSame(ctx.lineWidth, 0.5, "ctx.lineWidth", "0.5");
+
+t.done();
+
+});
+done();