Support subpixel layout for borders.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 232 matching lines @@
   virtual LayoutUnit paddingRight() const { return computedCSSPaddingRight(); }
   virtual LayoutUnit paddingBefore() const {
     return computedCSSPaddingBefore();
   }
   virtual LayoutUnit paddingAfter() const { return computedCSSPaddingAfter(); }
   virtual LayoutUnit paddingStart() const { return computedCSSPaddingStart(); }
   virtual LayoutUnit paddingEnd() const { return computedCSSPaddingEnd(); }
   LayoutUnit paddingOver() const { return computedCSSPaddingOver(); }
   LayoutUnit paddingUnder() const { return computedCSSPaddingUnder(); }
 
-  virtual int borderTop() const { return style()->borderTopWidth(); }
-  virtual int borderBottom() const { return style()->borderBottomWidth(); }
-  virtual int borderLeft() const { return style()->borderLeftWidth(); }
-  virtual int borderRight() const { return style()->borderRightWidth(); }
-  virtual int borderBefore() const { return style()->borderBeforeWidth(); }
-  virtual int borderAfter() const { return style()->borderAfterWidth(); }
-  virtual int borderStart() const { return style()->borderStartWidth(); }
-  virtual int borderEnd() const { return style()->borderEndWidth(); }
-  int borderOver() const { return style()->borderOverWidth(); }
-  int borderUnder() const { return style()->borderUnderWidth(); }
+  virtual LayoutUnit borderTop() const {
+    return LayoutUnit(style()->borderTopWidth());
+  }
+  virtual LayoutUnit borderBottom() const {
+    return LayoutUnit(style()->borderBottomWidth());
+  }
+  virtual LayoutUnit borderLeft() const {
+    return LayoutUnit(style()->borderLeftWidth());
+  }
+  virtual LayoutUnit borderRight() const {
+    return LayoutUnit(style()->borderRightWidth());
+  }
+  virtual LayoutUnit borderBefore() const {
+    return LayoutUnit(style()->borderBeforeWidth());
+  }
+  virtual LayoutUnit borderAfter() const {
+    return LayoutUnit(style()->borderAfterWidth());
+  }
+  virtual LayoutUnit borderStart() const {
+    return LayoutUnit(style()->borderStartWidth());
+  }
+  virtual LayoutUnit borderEnd() const {
+    return LayoutUnit(style()->borderEndWidth());
+  }
+  LayoutUnit borderOver() const {
+    return LayoutUnit(style()->borderOverWidth());
+  }
+  LayoutUnit borderUnder() const {
+    return LayoutUnit(style()->borderUnderWidth());
+  }
 
-  int borderWidth() const { return borderLeft() + borderRight(); }
-  int borderHeight() const { return borderTop() + borderBottom(); }
+  LayoutUnit borderWidth() const { return borderLeft() + borderRight(); }
+  LayoutUnit borderHeight() const { return borderTop() + borderBottom(); }
 
   // Insets from the border box to the inside of the border.
   LayoutRectOutsets borderInsets() const {
     return LayoutRectOutsets(-borderTop(), -borderRight(), -borderBottom(),
                              -borderLeft());
   }
 
   bool hasBorderOrPadding() const {
     return style()->hasBorder() || style()->hasPadding();
   }
@@ skipping 250 matching lines @@
   std::unique_ptr<PaintLayer> m_layer;
 
   std::unique_ptr<LayoutBoxModelObjectRareData> m_rareData;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBoxModelObject, isBoxModelObject());
 
 }  // namespace blink
 
 #endif  // LayoutBoxModelObject_h