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

third_party/WebKit/LayoutTests/fast/canvas/script-tests/canvas-strokeText-strokes-shadow.js

-description("Test that strokeText() doesn't produce a filled shadow.");
-var ctx = document.createElement('canvas').getContext('2d');
-
-ctx.fillStyle = 'green';
-ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-
-// Stroke an 'I' with its shadow in the upper left corner.
-ctx.strokeStyle = 'white';
-ctx.lineWidth = 2;
-ctx.shadowColor = 'red';
-ctx.shadowOffsetX = -15;
-ctx.shadowOffsetY = 0;
-ctx.font = '128px sans-serif';
-ctx.strokeText("I", 0, 50);
-
-imageData = ctx.getImageData(0, 0, 1, 1);
-imgdata = imageData.data;
-shouldBe("imgdata[0]", "0");
-shouldBe("imgdata[1]", "128");
-shouldBe("imgdata[2]", "0");
-shouldBe("imgdata[3]", "255");