Continue converting to explicit LayoutUnit constructors

third_party/WebKit/Source/core/layout/LayoutSliderContainer.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 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.
@@ skipping 51 matching lines @@
     return sliderStyle.appearance() == SliderVerticalPart;
 }
 
 void LayoutSliderContainer::computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop, LogicalExtentComputedValues& computedValues) const
 {
     HTMLInputElement* input = toHTMLInputElement(node()->shadowHost());
     bool isVertical = hasVerticalAppearance(input);
 
     if (input->layoutObject()->isSlider() && !isVertical && input->list()) {
         int offsetFromCenter = LayoutTheme::theme().sliderTickOffsetFromTrackCenter();
-        LayoutUnit trackHeight = 0;
+        LayoutUnit trackHeight;
         if (offsetFromCenter < 0) {
             trackHeight = -2 * offsetFromCenter;
         } else {
             int tickLength = LayoutTheme::theme().sliderTickSize().height();
             trackHeight = 2 * (offsetFromCenter + tickLength);
         }
         float zoomFactor = style()->effectiveZoom();
         if (zoomFactor != 1.0)
             trackHeight *= zoomFactor;
 
@@ skipping 56 matching lines @@
         thumbLocation.setX(thumbLocation.x() - offset);
     thumb->setLocation(thumbLocation);
 
     // We need one-off invalidation code here because painting of the timeline element does not go through style.
     // Instead it has a custom implementation in C++ code.
     // Therefore the style system cannot understand when it needs to be paint invalidated.
     setShouldDoFullPaintInvalidation();
 }
 
 } // namespace blink