Bug 569238 - Add some debugging information to determine what causes test_flush_on_paint.html to time out (temporary test-only change)

(transplanted from 9624407a729c81c531c7ab3a49e7209ede5525e0)

--HG--
extra : transplant_source : %96%24%40zr%9C%81%C51%C7%AB%3AI%E7%20%9E%DEU%25%E0

layout/base/tests/test_flush_on_paint.html

@@ -31,14 +31,15 @@ invalidationLoop();
 
 function doIteration() {
   lastPaintCount = plugin.getPaintCount();
+  ok(true, "Beginning iteration " + iterations + ", last paint count: " + lastPaintCount);
 
-  var v = 255 - iterations;
   expectedWidth = 201 + iterations;
   plugin.style.width = expectedWidth + "px";
   checkDone();
 }
 
 function checkDone() {
+  ok(true, "Check to see if we're done: " + plugin.getPaintCount());
   if (plugin.getPaintCount() == lastPaintCount) {
     setTimeout(checkDone, 30);
     return;