Delete a ton more dead vertical writing mode code.

sky/engine/core/rendering/RenderView.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 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,
@@ skipping 121 matching lines @@
 #endif
 
 bool RenderView::shouldDoFullPaintInvalidationForNextLayout() const
 {
     // It's hard to predict here which of full paint invalidation or per-descendant paint invalidation costs less.
     // For vertical writing mode or width change it's more likely that per-descendant paint invalidation
     // eventually turns out to be full paint invalidation but with the cost to handle more layout states
     // and discrete paint invalidation rects, so marking full paint invalidation here is more likely to cost less.
     // Otherwise, per-descendant paint invalidation is more likely to avoid unnecessary full paint invalidation.
 
-    if (!style()->isHorizontalWritingMode() || width() != viewWidth())
+    if (width() != viewWidth())
         return true;
 
     if (height() != viewHeight()) {
         if (RenderObject* backgroundRenderer = this->backgroundRenderer()) {
             // When background-attachment is 'fixed', we treat the viewport (instead of the 'root'
             // i.e. html or body) as the background positioning area, and we should full paint invalidation
             // viewport resize if the background image is not composited and needs full paint invalidation on
             // background positioning area resize.
             if (!m_compositor || !m_compositor->needsFixedRootBackgroundLayer(layer())) {
                 if (backgroundRenderer->style()->hasFixedBackgroundImage()
@@ skipping 186 matching lines @@
 
     // The only way we know how to hit these ASSERTS below this point is via the Chromium OS login screen.
     DisableCompositingQueryAsserts disabler;
 
     if (compositor()->inCompositingMode())
         compositor()->fullyInvalidatePaint();
 }
 
 void RenderView::mapRectToPaintInvalidationBacking(const RenderLayerModelObject* paintInvalidationContainer, LayoutRect& rect, const PaintInvalidationState* state) const
 {
-    if (style()->isFlippedBlocksWritingMode()) {
-        // We have to flip by hand since the view's logical height has not been determined.  We
-        // can use the viewport width and height.
-        if (style()->isHorizontalWritingMode())
-            rect.setY(viewHeight() - rect.maxY());
-        else
-            rect.setX(viewWidth() - rect.maxX());
-    }
-
     // Apply our transform if we have one (because of full page zooming).
     if (!paintInvalidationContainer && layer() && layer()->transform())
         rect = layer()->transform()->mapRect(rect);
 }
 
 
 void RenderView::absoluteRects(Vector<IntRect>& rects, const LayoutPoint& accumulatedOffset) const
 {
     rects.append(pixelSnappedIntRect(accumulatedOffset, layer()->size()));
 }
@@ skipping 412 matching lines @@
     return viewWidth(IncludeScrollbars) / scale;
 }
 
 double RenderView::layoutViewportHeight() const
 {
     float scale = m_frameView ? m_frameView->frame().pageZoomFactor() : 1;
     return viewHeight(IncludeScrollbars) / scale;
 }
 
 } // namespace blink