Force all LayoutUnit construction to be explicit

third_party/WebKit/Source/core/layout/LayoutMultiColumnFlowThread.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 267 matching lines @@
 LayoutUnit LayoutMultiColumnFlowThread::maxColumnLogicalHeight() const
 {
     if (m_columnHeightAvailable) {
         // If height is non-auto, it's already constrained against max-height as well.
         // Just return it.
         return m_columnHeightAvailable;
     }
     const LayoutBlockFlow* multicolBlock = multiColumnBlockFlow();
     Length logicalMaxHeight = multicolBlock->style()->logicalMaxHeight();
     if (!logicalMaxHeight.isMaxSizeNone()) {
-        LayoutUnit resolvedLogicalMaxHeight = multicolBlock->computeContentLogicalHeight(MaxSize, logicalMaxHeight, -1);
+        LayoutUnit resolvedLogicalMaxHeight = multicolBlock->computeContentLogicalHeight(MaxSize, logicalMaxHeight, LayoutUnit(-1));
         if (resolvedLogicalMaxHeight != -1)
             return resolvedLogicalMaxHeight;
     }
     return LayoutUnit::max();
 }
 
 LayoutUnit LayoutMultiColumnFlowThread::tallestUnbreakableLogicalHeight(LayoutUnit offsetInFlowThread) const
 {
     if (LayoutMultiColumnSet* multicolSet = columnSetAtBlockOffset(offsetInFlowThread))
         return multicolSet->tallestUnbreakableLogicalHeight();
@@ skipping 676 matching lines @@
         }
         if (canContainSpannerInParentFragmentationContext(*object))
             next = object->nextInPreOrder(&root);
         else
             next = object->nextInPreOrderAfterChildren(&root);
     }
     return true;
 }
 
 } // namespace blink