Use testharness.js instead of js-test.js in LayoutTests/fast/canvas tests.

third_party/WebKit/LayoutTests/fast/canvas/script-tests/canvas-gradient-without-path.js

-description("Series of tests to ensure that no gradient is drawn without path");
-var ctx = document.createElement('canvas').getContext('2d');
-
-ctx.fillStyle = 'green';
-ctx.fillRect(0, 0, 100, 100);
-
-var gradient = ctx.createLinearGradient(0, 0, 0, 100);
-gradient.addColorStop(1, 'red');
-ctx.fillStyle = gradient;
-
-ctx.fill();
-
-var imageData = ctx.getImageData(1, 1, 98, 98);
-var imgdata = imageData.data;
-shouldBe("imgdata[4]", "0");
-shouldBe("imgdata[5]", "128");
-shouldBe("imgdata[6]", "0");
-
-ctx.strokeStyle = 'green';
-ctx.lineWidth = 100;
-ctx.strokeRect(50, 0, 100, 100);
-
-ctx.strokeStyle = gradient;
-
-ctx.stroke();
-
-imageData = ctx.getImageData(1, 1, 98, 98);
-imgdata = imageData.data;
-shouldBe("imgdata[4]", "0");
-shouldBe("imgdata[5]", "128");
-shouldBe("imgdata[6]", "0");