Blocks should be aligned by style of parents

Source/core/rendering/RenderBox.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. 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 2089 matching lines @@
         return;
     }
 
     // CSS 2.1: "If there is exactly one value specified as 'auto', its used value follows from the equality."
     if (marginEndLength.isAuto() && marginBoxWidth < availableWidth) {
         marginStart = marginStartWidth;
         marginEnd = availableWidth - childWidth - marginStart;
         return;
     }
 
-    bool pushToEndFromTextAlign = !marginEndLength.isAuto() && ((!containingBlockStyle->isLeftToRightDirection() && containingBlockStyle->textAlign() == WEBKIT_LEFT)
+    bool adjustFromTextAlign = !marginEndLength.isAuto() && ((!containingBlockStyle->isLeftToRightDirection() && containingBlockStyle->textAlign() == WEBKIT_LEFT)
         || (containingBlockStyle->isLeftToRightDirection() && containingBlockStyle->textAlign() == WEBKIT_RIGHT));
-    if ((marginStartLength.isAuto() && marginBoxWidth < availableWidth) || pushToEndFromTextAlign) {
+    bool hasInvertedDirection = containingBlockStyle->isLeftToRightDirection() != style()->isLeftToRightDirection();
+
+    if ((marginStartLength.isAuto() && marginBoxWidth < availableWidth) || (adjustFromTextAlign && !hasInvertedDirection)) {
         marginEnd = marginEndWidth;
         marginStart = availableWidth - childWidth - marginEnd;
         return;
     }
 
+    if (adjustFromTextAlign && hasInvertedDirection) {
+        marginStart = marginStartWidth;
+        marginEnd = availableWidth - childWidth - marginStart;
+        return;
+    }
+
     // Either no auto margins, or our margin box width is >= the container width, auto margins will just turn into 0.
     marginStart = marginStartWidth;
     marginEnd = marginEndWidth;
 }
 
 void RenderBox::updateLogicalHeight()
 {
     m_intrinsicContentLogicalHeight = contentLogicalHeight();
 
     LogicalExtentComputedValues computedValues;
@@ skipping 2301 matching lines @@
     computedValues.m_margins.m_end = marginEnd();
 
     setLogicalTop(oldLogicalTop);
     setLogicalWidth(oldLogicalWidth);
     setLogicalLeft(oldLogicalLeft);
     setMarginLeft(oldMarginLeft);
     setMarginRight(oldMarginRight);
 }
 
 } // namespace blink