Support subpixel layout for borders.

third_party/WebKit/Source/core/layout/line/InlineFlowBox.h

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2007 Apple 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 156 matching lines @@
   }
   LayoutUnit marginLogicalRight() const {
     if (!includeLogicalRightEdge())
       return LayoutUnit();
     return isHorizontal() ? boxModelObject().marginRight()
                           : boxModelObject().marginBottom();
   }
   LayoutUnit marginLogicalWidth() const {
     return marginLogicalLeft() + marginLogicalRight();
   }
-  int borderLogicalLeft() const {
+  LayoutUnit borderLogicalLeft() const {
     if (!includeLogicalLeftEdge())
-      return 0;
-    return isHorizontal()
-               ? getLineLayoutItem()
-                     .style(isFirstLineStyle())
-                     ->borderLeftWidth()
-               : getLineLayoutItem()
-                     .style(isFirstLineStyle())
-                     ->borderTopWidth();
+      return LayoutUnit();
+    return LayoutUnit(
+        isHorizontal()
+            ? getLineLayoutItem().style(isFirstLineStyle())->borderLeftWidth()
+            : getLineLayoutItem().style(isFirstLineStyle())->borderTopWidth());
   }
-  int borderLogicalRight() const {
+  LayoutUnit borderLogicalRight() const {
     if (!includeLogicalRightEdge())
-      return 0;
-    return isHorizontal()
-               ? getLineLayoutItem()
-                     .style(isFirstLineStyle())
-                     ->borderRightWidth()
-               : getLineLayoutItem()
-                     .style(isFirstLineStyle())
-                     ->borderBottomWidth();
+      return LayoutUnit();
+    return LayoutUnit(
+        isHorizontal()
+            ? getLineLayoutItem().style(isFirstLineStyle())->borderRightWidth()
+            : getLineLayoutItem()
+                  .style(isFirstLineStyle())
+                  ->borderBottomWidth());
   }
   int paddingLogicalLeft() const {
     if (!includeLogicalLeftEdge())
       return 0;
     return (isHorizontal() ? boxModelObject().paddingLeft()
                            : boxModelObject().paddingTop())
         .toInt();
   }
   int paddingLogicalRight() const {
     if (!includeLogicalRightEdge())
@@ skipping 281 matching lines @@
 
 inline void InlineFlowBox::setHasBadChildList() {
 #if DCHECK_IS_ON()
   m_hasBadChildList = true;
 #endif
 }
 
 }  // namespace blink
 
 #endif  // InlineFlowBox_h