Change LayoutState to be stack-allocated

Source/core/rendering/RenderInline.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 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.
  *
@@ skipping 976 matching lines @@
     LayoutUnit logicalHeight = lastLineBox()->logicalBottomVisualOverflow(lastRootBox.lineBottom()) - logicalTop;
 
     LayoutRect rect(logicalLeftSide, logicalTop, logicalWidth, logicalHeight);
     if (!style()->isHorizontalWritingMode())
         rect = rect.transposedRect();
     return rect;
 }
 
 LayoutRect RenderInline::clippedOverflowRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer) const
 {
-    ASSERT(!view() || !view()->layoutStateEnabled());
+    ASSERT(!view() || !view()->layoutStateCachedOffsetsEnabled());
 
     if (!firstLineBoxIncludingCulling() && !continuation())
         return LayoutRect();
 
     LayoutRect repaintRect(linesVisualOverflowBoundingBox());
     bool hitRepaintContainer = false;
 
     // We need to add in the in-flow position offsets of any inlines (including us) up to our
     // containing block.
     RenderBlock* cb = containingBlock();
@@ skipping 41 matching lines @@
         if (!curr->isText())
             r.unite(curr->rectWithOutlineForPaintInvalidation(paintInvalidationContainer, outlineWidth));
     }
     return r;
 }
 
 void RenderInline::mapRectToPaintInvalidationBacking(const RenderLayerModelObject* paintInvalidationContainer, LayoutRect& rect, bool fixed) const
 {
     if (RenderView* v = view()) {
         // LayoutState is only valid for root-relative repainting
-        if (v->canUseLayoutStateForContainer(paintInvalidationContainer)) {
+        if (v->canMapUsingLayoutStateForContainer(paintInvalidationContainer)) {
             LayoutState* layoutState = v->layoutState();
             if (style()->hasInFlowPosition() && layer())
                 rect.move(layer()->offsetForInFlowPosition());
             rect.move(layoutState->paintOffset());
             if (layoutState->isClipped())
                 rect.intersect(layoutState->clipRect());
             return;
         }
     }
 
@@ skipping 66 matching lines @@
 
     return offset;
 }
 
 void RenderInline::mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState& transformState, MapCoordinatesFlags mode, bool* wasFixed) const
 {
     if (repaintContainer == this)
         return;
 
     if (RenderView *v = view()) {
-        if (v->canUseLayoutStateForContainer(repaintContainer)) {
+        if (v->canMapUsingLayoutStateForContainer(repaintContainer)) {
             LayoutState* layoutState = v->layoutState();
             LayoutSize offset = layoutState->paintOffset();
             if (style()->hasInFlowPosition() && layer())
                 offset += layer()->offsetForInFlowPosition();
             transformState.move(offset);
             return;
         }
     }
 
     bool containerSkipped;
@@ skipping 409 matching lines @@
         container = this;
 
     FloatPoint absPos = container->localToAbsolute();
     region.bounds.setX(absPos.x() + region.bounds.x());
     region.bounds.setY(absPos.y() + region.bounds.y());
 
     regions.append(region);
 }
 
 } // namespace WebCore