Use testharness.js in fast/images/ for border/cmyk tests

third_party/WebKit/LayoutTests/fast/images/script-tests/cmyk-jpeg-with-color-profile.js

-description("Test that we can render a CMYK JPEG without color corruption.");
-
-// This is an async test because it has to wait for WebKit to load an image.
-jsTestIsAsync = true;
-
+async_test(function(t) {
 // The colors used for verifying the test results.
 var red = 0, green = 0, blue = 0, alpha = 0;
-
 // Create a canvas element. This element is used for pasting a CMYK JPEG and
 // reading its pixels.
 var canvas = document.createElement("canvas");
 canvas.width = 64;
 canvas.height = 64;
-
 // Create an image object and load a CMYK JPEG.
 var image = new Image();
-image.onload = function() {
+image.onload = t.step_func_done(function() {
     // Paste the loaded JPEG ('resources/cmyk-jpeg.jpg') to the canvas.
     var context = canvas.getContext("2d");
     context.drawImage(image, 0, 0);
 
     // Read the pixels in the canvas and calculate their avarage values.
     // (DumpRenderTree always allows to read them.)
     var data = context.getImageData(0, 0, canvas.width, canvas.height);
     var pixels = canvas.width * canvas.height;
     for (var i = 0; i < pixels * 4; i += 4) {
         red += data.data[i + 0];
         green += data.data[i + 1];
         blue += data.data[i + 2];
         alpha += data.data[i + 3];
     }
     red   /= pixels;
     green /= pixels;
     blue  /= pixels;
     alpha /= pixels;
 
     // Even though the output colors depend on color-profiles (i.e. they depend
     // on devices), green must be the most prominent color because the source
     // image only consists of green. So, we test it.
-    shouldBeTrue("green > red");
-    shouldBeTrue("green > blue");
+    assert_greater_than(green, red);
+    assert_greater_than(green, blue);
 
-    // Notify this test has been finished.
-    finishJSTest();
-}
+});
 image.src = "resources/cmyk-jpeg.jpg";
+});