Making LayoutUnit conversions to Float type explicit

Source/core/rendering/RenderBlockFlow.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 233 matching lines @@
     if (minColumnCount >= desiredColumnCount) {
         // The forced page breaks are in control of the balancing. Just set the column height to the
         // maximum page break distance.
         if (!pageLogicalHeight) {
             LayoutUnit distanceBetweenBreaks = max<LayoutUnit>(colInfo->maximumDistanceBetweenForcedBreaks(),
                 view()->layoutState()->pageLogicalOffset(*this, borderBefore() + paddingBefore() + layoutOverflowLogicalBottom) - colInfo->forcedBreakOffset());
             columnHeight = max(colInfo->minimumColumnHeight(), distanceBetweenBreaks);
         }
     } else if (layoutOverflowLogicalBottom > boundedMultiply(pageLogicalHeight, desiredColumnCount)) {
         // Now that we know the intrinsic height of the columns, we have to rebalance them.
-        columnHeight = max<LayoutUnit>(colInfo->minimumColumnHeight(), ceilf((float)layoutOverflowLogicalBottom / desiredColumnCount));
+        columnHeight = max<LayoutUnit>(colInfo->minimumColumnHeight(), ceilf(layoutOverflowLogicalBottom.toFloat() / desiredColumnCount));
     }
 
     if (columnHeight && columnHeight != pageLogicalHeight) {
         pageLogicalHeight = columnHeight;
         return true;
     }
 
     return false;
 }
 
@@ skipping 118 matching lines @@
             addOverflowFromBlockChildren();
         LayoutUnit layoutOverflowLogicalBottom = (isHorizontalWritingMode() ? layoutOverflowRect().maxY() : layoutOverflowRect().maxX()) - borderBefore() - paddingBefore();
         m_overflow = savedOverflow.release();
 
         if (!hasSpecifiedPageLogicalHeight && shouldRelayoutForPagination(pageLogicalHeight, layoutOverflowLogicalBottom)) {
             statePusher.pop();
             setEverHadLayout(true);
             return false;
         }
 
-        setColumnCountAndHeight(ceilf((float)layoutOverflowLogicalBottom / pageLogicalHeight), pageLogicalHeight);
+        setColumnCountAndHeight(ceilf(layoutOverflowLogicalBottom.toFloat() / pageLogicalHeight.toFloat()), pageLogicalHeight.toFloat());
     }
 
     if (shouldBreakAtLineToAvoidWidow()) {
         statePusher.pop();
         setEverHadLayout(true);
         return false;
     }
 
     // Calculate our new height.
     LayoutUnit oldHeight = logicalHeight();
@@ skipping 2439 matching lines @@
 RenderBlockFlow::RenderBlockFlowRareData& RenderBlockFlow::ensureRareData()
 {
     if (m_rareData)
         return *m_rareData;
 
     m_rareData = adoptPtr(new RenderBlockFlowRareData(this));
     return *m_rareData;
 }
 
 } // namespace WebCore