Move pushMappingToContainer to RenderBoxModelObject

Source/core/rendering/RenderBox.cpp

Index: Source/core/rendering/RenderBox.cpp
diff --git a/Source/core/rendering/RenderBox.cpp b/Source/core/rendering/RenderBox.cpp
index 035126fa9f99c5848dd76e33b7a844ca8fdc420b..1659f975a9909152952f1430a34d7429b64a4ba8 100644
--- a/Source/core/rendering/RenderBox.cpp
+++ b/Source/core/rendering/RenderBox.cpp
@@ -1713,43 +1713,6 @@ void RenderBox::mapLocalToContainer(const RenderLayerModelObject* repaintContain
     o->mapLocalToContainer(repaintContainer, transformState, mode, wasFixed);
 }
 
-const RenderObject* RenderBox::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const
-{
-    ASSERT(ancestorToStopAt != this);
-
-    bool ancestorSkipped;
-    RenderObject* container = this->container(ancestorToStopAt, &ancestorSkipped);
-    if (!container)
-        return 0;
-
-    bool isFixedPos = style()->position() == FixedPosition;
-    bool hasTransform = hasLayer() && layer()->transform();
-
-    LayoutSize adjustmentForSkippedAncestor;
-    if (ancestorSkipped) {
-        // There can't be a transform between repaintContainer and o, because transforms create containers, so it should be safe
-        // to just subtract the delta between the ancestor and o.
-        adjustmentForSkippedAncestor = -ancestorToStopAt->offsetFromAncestorContainer(container);
-    }
-
-    bool offsetDependsOnPoint = false;
-    LayoutSize containerOffset = offsetFromContainer(container, LayoutPoint(), &offsetDependsOnPoint);
-
-    bool preserve3D = container->style()->preserves3D() || style()->preserves3D();
-    if (shouldUseTransformFromContainer(container)) {
-        TransformationMatrix t;
-        getTransformFromContainer(container, containerOffset, t);
-        t.translateRight(adjustmentForSkippedAncestor.width(), adjustmentForSkippedAncestor.height());
-        
-        geometryMap.push(this, t, preserve3D, offsetDependsOnPoint, isFixedPos, hasTransform);
-    } else {
-        containerOffset += adjustmentForSkippedAncestor;
-        geometryMap.push(this, containerOffset, preserve3D, offsetDependsOnPoint, isFixedPos, hasTransform);
-    }
-    
-    return ancestorSkipped ? ancestorToStopAt : container;
-}
-
 void RenderBox::mapAbsoluteToLocalPoint(MapCoordinatesFlags mode, TransformState& transformState) const
 {
     // We don't expect to be called during layout.