[CSS Exclusions] Programmatic layout tests fail when subpixel layout is disabled

Source/core/rendering/exclusions/ExclusionRectangle.cpp

 /*
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 195 matching lines @@
     bool minCornerDefinesX = fabs(centerY - minY) > fabs(centerY - maxY);
     bool intervalFitsWithinCorners = minIntervalWidth + 2 * bounds.rx() <= bounds.width();
     FloatPoint cornerIntercept = bounds.cornerInterceptForWidth(minIntervalWidth);
 
     if (intervalOverlapsMinCorner && (!intervalOverlapsMaxCorner || minCornerDefinesX)) {
         if (intervalFitsWithinCorners || bounds.y() + cornerIntercept.y() < minY) {
             result = minY;
             return true;
         }
         if (minIntervalHeight < bounds.height() - (2 * cornerIntercept.y())) {
-            result = LayoutUnit::fromFloatCeil(bounds.y() + cornerIntercept.y());
+            result = ceiledLayoutUnit(bounds.y() + cornerIntercept.y());

[leviw_travelin_and_unemployed, 2013/05/21 22:21:56]

Avoid this churn since this makes no change. I'll handle getting rid of
ceiledLayoutUnit in a separate patch.

             return true;
         }
     }
 
     if (intervalOverlapsMaxCorner && (!intervalOverlapsMinCorner || !minCornerDefinesX)) {
         if (intervalFitsWithinCorners || minY <=  bounds.maxY() - cornerIntercept.y() - minIntervalHeight) {
             result = minY;
             return true;
         }
     }
 
     return false;
 }
 
 } // namespace WebCore