Expose ImageData on WorkerGlobalScope.

LayoutTests/fast/canvas/script-tests/canvas-ImageData.js

-description("Test ImageData constructor");
+if ("importScripts" in this)

[Justin Novosad, 2014/03/28 17:56:51]

This file should be moved out of the script-test subdirectory because it is
referenced by a test that is not based on TEMPLATE.html

[sof, 2014/03/28 18:39:07]

thanks, didn't know - moved it into resources/ and adjusted references. 

+    importScripts('../../../resources/js-test.js');
+else
+    description("Test ImageData constructor");
 
 function setRGBA(imageData, i, rgba) {
     var s = i * 4;
     imageData[s] = rgba[0];
     imageData[s + 1] = rgba[1];
     imageData[s + 2] = rgba[2];
     imageData[s + 3] = rgba[3];
 }
 
 function getRGBA(imageData, i) {
@@ skipping 46 matching lines @@
 
 var data = new Uint8ClampedArray(400);
 data[22] = 129;
 imageDataFromData = new ImageData(data, 20, 5);
 shouldBe("imageDataFromData.width", "20");
 shouldBe("imageDataFromData.height", "5");
 shouldBe("imageDataFromData.data", "data");
 shouldBe("getRGBA(imageDataFromData.data, 2)", "getRGBA(data, 2)");
 setRGBA(imageDataFromData.data, 2, testColor);
 shouldBe("getRGBA(imageDataFromData.data, 2)", "getRGBA(data, 2)");
+
+finishJSTest();