Making LayoutUnit conversions to Float type explicit

Source/core/rendering/RenderMultiColumnSet.cpp

 /*
  * Copyright (C) 2012 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 274 matching lines @@
     // We must always return a value of 1 or greater. Column count = 0 is a meaningless situation,
     // and will confuse and cause problems in other parts of the code.
     if (!computedColumnHeight())
         return 1;
 
     // Our portion rect determines our column count. We have as many columns as needed to fit all the content.
     LayoutUnit logicalHeightInColumns = flowThread()->isHorizontalWritingMode() ? flowThreadPortionRect().height() : flowThreadPortionRect().width();
     if (!logicalHeightInColumns)
         return 1;
 
-    unsigned count = ceil(static_cast<float>(logicalHeightInColumns) / computedColumnHeight());
+    unsigned count = ceil(logicalHeightInColumns.toFloat() / computedColumnHeight().toFloat());
     ASSERT(count >= 1);
     return count;
 }
 
 LayoutRect RenderMultiColumnSet::columnRectAt(unsigned index) const
 {
     LayoutUnit colLogicalWidth = computedColumnWidth();
     LayoutUnit colLogicalHeight = computedColumnHeight();
     LayoutUnit colLogicalTop = borderBefore() + paddingBefore();
     LayoutUnit colLogicalLeft = borderAndPaddingLogicalLeft();
@@ skipping 18 matching lines @@
         return 0;
     // If we're laying out right now, we cannot constrain against some logical bottom, since it
     // isn't known yet. Otherwise, just return the last column if we're past the logical bottom.
     if (mode == ClampToExistingColumns) {
         LayoutUnit flowThreadLogicalBottom = isHorizontalWritingMode() ? portionRect.maxY() : portionRect.maxX();
         if (offset >= flowThreadLogicalBottom)
             return columnCount() - 1;
     }
 
     // Just divide by the column height to determine the correct column.
-    return static_cast<float>(offset - flowThreadLogicalTop) / computedColumnHeight();
+    return (offset - flowThreadLogicalTop).toFloat() / computedColumnHeight().toFloat();
 }
 
 LayoutRect RenderMultiColumnSet::flowThreadPortionRectAt(unsigned index) const
 {
     LayoutRect portionRect = flowThreadPortionRect();
     if (isHorizontalWritingMode())
         portionRect = LayoutRect(portionRect.x(), portionRect.y() + index * computedColumnHeight(), portionRect.width(), computedColumnHeight());
     else
         portionRect = LayoutRect(portionRect.x() + index * computedColumnHeight(), portionRect.y(), computedColumnHeight(), portionRect.height());
     return portionRect;
@@ skipping 239 matching lines @@
         fragments.append(fragment);
     }
 }
 
 const char* RenderMultiColumnSet::renderName() const
 {
     return "RenderMultiColumnSet";
 }
 
 }