Remove virtual test suits virtual/threaded/fast/canvas-toBlob

third_party/WebKit/LayoutTests/fast/canvas/canvas-toBlob-toDataURL-race-imageEncoder-png.html

-<script src = "../../../../resources/js-test.js"></script>
-<script src = "../../../../fast/canvas/script-tests/canvas-toBlob-toDataURL-race.js"></script>
+<script src = "../../resources/js-test.js"></script>
+<script src = "../../fast/canvas/script-tests/canvas-toBlob-toDataURL-race.js"></script>
 <script type = 'text/javascript'>
 description("Verifies if synchronous PNG image encoding (toDataURL) conflicts with asynchronous image encoding (toBlob)");
 
 //Fire a bunch of toBlob operations of canvas to keep the async thread busy
 var j = 0; // due to async nature of toBlob we need a separate counter
 for (var i = 0; i < numToBlobCalls; i++) 
 {
     canvas.toBlob(function(blob) {
         url = URL.createObjectURL(blob);
         testImages[j++].src = url;
     });
 }
 
 //Then file a bunch of toDataURL operation on main thread, so both threads now compete for image encoding
 for (var i = numToBlobCalls; i < (numToDataURLCalls + numToBlobCalls); i++) 
 {
     testImages[i].src = canvas.toDataURL();
 }
 </script>