Support subpixel layout for borders.

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

 /*
  * Copyright (C) 2011 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 620 matching lines @@
       return style()->isLeftToRightDirection()
                  ? TransformedWritingMode::TopToBottomWritingMode
                  : TransformedWritingMode::BottomToTopWritingMode;
   }
   NOTREACHED();
   return TransformedWritingMode::TopToBottomWritingMode;
 }
 
 LayoutUnit LayoutFlexibleBox::flowAwareBorderStart() const {
   if (isHorizontalFlow())
-    return LayoutUnit(isLeftToRightFlow() ? borderLeft() : borderRight());
-  return LayoutUnit(isLeftToRightFlow() ? borderTop() : borderBottom());
+    return isLeftToRightFlow() ? borderLeft() : borderRight();
+  return isLeftToRightFlow() ? borderTop() : borderBottom();
 }
 
 LayoutUnit LayoutFlexibleBox::flowAwareBorderEnd() const {
   if (isHorizontalFlow())
-    return LayoutUnit(isLeftToRightFlow() ? borderRight() : borderLeft());
-  return LayoutUnit(isLeftToRightFlow() ? borderBottom() : borderTop());
+    return isLeftToRightFlow() ? borderRight() : borderLeft();
+  return isLeftToRightFlow() ? borderBottom() : borderTop();
 }
 
 LayoutUnit LayoutFlexibleBox::flowAwareBorderBefore() const {
   switch (getTransformedWritingMode()) {
     case TransformedWritingMode::TopToBottomWritingMode:
-      return LayoutUnit(borderTop());
+      return borderTop();
     case TransformedWritingMode::BottomToTopWritingMode:
-      return LayoutUnit(borderBottom());
+      return borderBottom();
     case TransformedWritingMode::LeftToRightWritingMode:
-      return LayoutUnit(borderLeft());
+      return borderLeft();
     case TransformedWritingMode::RightToLeftWritingMode:
-      return LayoutUnit(borderRight());
+      return borderRight();
   }
   NOTREACHED();
-  return LayoutUnit(borderTop());
+  return borderTop();
 }
 
 DISABLE_CFI_PERF
 LayoutUnit LayoutFlexibleBox::flowAwareBorderAfter() const {
   switch (getTransformedWritingMode()) {
     case TransformedWritingMode::TopToBottomWritingMode:
-      return LayoutUnit(borderBottom());
+      return borderBottom();
     case TransformedWritingMode::BottomToTopWritingMode:
-      return LayoutUnit(borderTop());
+      return borderTop();
     case TransformedWritingMode::LeftToRightWritingMode:
-      return LayoutUnit(borderRight());
+      return borderRight();
     case TransformedWritingMode::RightToLeftWritingMode:
-      return LayoutUnit(borderLeft());
+      return borderLeft();
   }
   NOTREACHED();
-  return LayoutUnit(borderTop());
+  return borderTop();
 }
 
 LayoutUnit LayoutFlexibleBox::flowAwarePaddingStart() const {
   if (isHorizontalFlow())
     return isLeftToRightFlow() ? paddingLeft() : paddingRight();
   return isLeftToRightFlow() ? paddingTop() : paddingBottom();
 }
 
 LayoutUnit LayoutFlexibleBox::flowAwarePaddingEnd() const {
   if (isHorizontalFlow())
@@ skipping 1493 matching lines @@
       LayoutUnit originalOffset =
           lineContexts[lineNumber].crossAxisOffset - crossAxisStartEdge;
       LayoutUnit newOffset =
           contentExtent - originalOffset - lineCrossAxisExtent;
       adjustAlignmentForChild(*flexItem.box, newOffset - originalOffset);
     }
   }
 }
 
 }  // namespace blink