Transition to explicit constructors in LayoutUnit

third_party/WebKit/Source/core/layout/LayoutObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 975 matching lines @@
     // without overflowing. This means that all the opportunities for wrapping
     // have been taken.
     //
     // See INTRINSIC SIZES / PREFERRED LOGICAL WIDTHS above.
     //
     // CSS 2.1 calls this width the "preferred minimum width" (thus this name)
     // and "minimum content width" (for table).
     // However CSS 3 calls it the "min-content inline size".
     // https://drafts.csswg.org/css-sizing-3/#min-content-inline-size
     // TODO(jchaffraix): We will probably want to rename it to match CSS 3.
-    virtual LayoutUnit minPreferredLogicalWidth() const { return 0; }
+    virtual LayoutUnit minPreferredLogicalWidth() const { return LayoutUnit(); }
 
     // This function returns the maximum logical width this object can have.
     //
     // See INTRINSIC SIZES / PREFERRED LOGICAL WIDTHS above.
     //
     // CSS 2.1 calls this width the "preferred width". However CSS 3 calls it
     // the "max-content inline size".
     // https://drafts.csswg.org/css-sizing-3/#max-content-inline-size
     // TODO(jchaffraix): We will probably want to rename it to match CSS 3.
-    virtual LayoutUnit maxPreferredLogicalWidth() const { return 0; }
+    virtual LayoutUnit maxPreferredLogicalWidth() const { return LayoutUnit(); }
 
     const ComputedStyle* style() const { return m_style.get(); }
     ComputedStyle* mutableStyle() const { return m_style.get(); }
 
     // m_style can only be nullptr before the first style is set, thus most
     // callers will never see a nullptr style and should use styleRef().
     // FIXME: It would be better if style() returned a const reference.
     const ComputedStyle& styleRef() const { return mutableStyleRef(); }
     ComputedStyle& mutableStyleRef() const { ASSERT(m_style); return *m_style; }
 
@@ skipping 1088 matching lines @@
 void showTree(const blink::LayoutObject*);
 void showLineTree(const blink::LayoutObject*);
 void showLayoutTree(const blink::LayoutObject* object1);
 // We don't make object2 an optional parameter so that showLayoutTree
 // can be called from gdb easily.
 void showLayoutTree(const blink::LayoutObject* object1, const blink::LayoutObject* object2);
 
 #endif
 
 #endif // LayoutObject_h