[css-flexbox] Fix handling of borders/padding for abspos items

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 1377 matching lines @@
 }
 
 LayoutUnit LayoutFlexibleBox::staticCrossAxisPositionForPositionedChild(const LayoutBox& child)
 {
     LayoutUnit availableSpace = crossAxisContentExtent() - crossAxisExtentForChild(child);
     return alignmentOffset(availableSpace, alignmentForChild(child), LayoutUnit(), LayoutUnit(), styleRef().flexWrap() == FlexWrapReverse);
 }
 
 LayoutUnit LayoutFlexibleBox::staticInlinePositionForPositionedChild(const LayoutBox& child)
 {
-    LayoutUnit staticInlineOffset = flowAwareBorderStart() + flowAwarePaddingStart();
-    return staticInlineOffset + (isColumnFlow() ?
+    return startOffsetForContent() + (isColumnFlow() ?
         staticCrossAxisPositionForPositionedChild(child) :
         staticMainAxisPositionForPositionedChild(child));
 }
 
 LayoutUnit LayoutFlexibleBox::staticBlockPositionForPositionedChild(const LayoutBox& child)
 {
-    LayoutUnit staticBlockOffset = flowAwareBorderBefore() + flowAwarePaddingBefore();
-    return staticBlockOffset + (isColumnFlow() ?
+    return borderAndPaddingBefore() + (isColumnFlow() ?
         staticMainAxisPositionForPositionedChild(child) :
         staticCrossAxisPositionForPositionedChild(child));
 }
 
 bool LayoutFlexibleBox::setStaticPositionForPositionedLayout(LayoutBox& child)
 {
     bool positionChanged = false;
     PaintLayer* childLayer = child.layer();
     if (child.styleRef().hasStaticInlinePosition(styleRef().isHorizontalWritingMode())) {
         LayoutUnit inlinePosition = staticInlinePositionForPositionedChild(child);
@@ skipping 445 matching lines @@
             ASSERT(child);
             LayoutUnit lineCrossAxisExtent = lineContexts[lineNumber].crossAxisExtent;
             LayoutUnit originalOffset = lineContexts[lineNumber].crossAxisOffset - crossAxisStartEdge;
             LayoutUnit newOffset = contentExtent - originalOffset - lineCrossAxisExtent;
             adjustAlignmentForChild(*child, newOffset - originalOffset);
         }
     }
 }
 
 } // namespace blink