Bug 681192. Part 15: Fix test now that scrollbox scrollWidth/Heights isn't special. r=matspal

--HG--
extra : rebase_source : d77548c8b7b2c62a66070a4cd8414cdf1f7819e6

dom/tests/mochitest/general/test_offsets.js

@@ -32,11 +32,6 @@ function toNearestAppunit(v)
   return Math.round(v*60)/60;
 }
 
-function floorToNearestAppunit(v)
-{
-  return Math.floor(toNearestAppunit(v));
-}
-
 function isEqualAppunits(a, b, msg)
 {
   is(toNearestAppunit(a), toNearestAppunit(b), msg);
@@ -67,11 +62,11 @@ function testElement(element)
   var scrollWidth, scrollHeight, clientWidth, clientHeight;
   if (element.id == "scrollbox") {
     var lastchild = $("lastline");
-    scrollWidth = floorToNearestAppunit(lastchild.getBoundingClientRect().width + paddingLeft + paddingRight);
+    scrollWidth = lastchild.getBoundingClientRect().width + paddingLeft + paddingRight;
     var top = element.firstChild.getBoundingClientRect().top;
     var bottom = element.lastChild.getBoundingClientRect().bottom;
     var contentsHeight = bottom - top;
-    scrollHeight = floorToNearestAppunit(contentsHeight + paddingTop + paddingBottom);
+    scrollHeight = contentsHeight + paddingTop + paddingBottom;
     clientWidth = paddingLeft + width + paddingRight - scrollbarWidth;
     clientHeight = paddingTop + height + paddingBottom - scrollbarHeight;
   }