Rename isNormalFlowOnly to something meaningful

Source/core/layout/compositing/CompositingInputsUpdater.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/layout/compositing/CompositingInputsUpdater.h"
 
 #include "core/layout/LayoutBlock.h"
 #include "core/layout/compositing/CompositedDeprecatedPaintLayerMapping.h"
 #include "core/layout/compositing/DeprecatedPaintLayerCompositor.h"
@@ skipping 126 matching lines @@
                 properties.ancestorScrollingLayer = parentLayerOnContainingBlockChain->ancestorScrollingLayer();
                 if (parentLayerOnContainingBlockChain->scrollsOverflow())
                     properties.ancestorScrollingLayer = parentLayerOnContainingBlockChain;
 
                 if (layer->layoutObject()->isOutOfFlowPositioned() && !layer->subtreeIsInvisible()) {
                     const DeprecatedPaintLayer* clippingLayer = properties.clippingContainer ? properties.clippingContainer->enclosingLayer() : layer->compositor()->rootLayer();
                     if (hasClippedStackingAncestor(layer, clippingLayer))
                         properties.clipParent = clippingLayer;
                 }
 
-                if (!layer->stackingNode()->isNormalFlowOnly()
+                if (layer->stackingNode()->isTreatedAsStackingContextForPainting()
                     && properties.ancestorScrollingLayer
                     && !info.ancestorStackingContext->layoutObject()->isDescendantOf(properties.ancestorScrollingLayer->layoutObject()))
                     properties.scrollParent = properties.ancestorScrollingLayer;
             }
         }
 
         properties.hasAncestorWithClipPath = info.hasAncestorWithClipPath;
         layer->updateAncestorDependentCompositingInputs(properties);
     }
 
@@ skipping 30 matching lines @@
     ASSERT(!layer->childNeedsCompositingInputsUpdate());
     ASSERT(!layer->needsCompositingInputsUpdate());
 
     for (DeprecatedPaintLayer* child = layer->firstChild(); child; child = child->nextSibling())
         assertNeedsCompositingInputsUpdateBitsCleared(child);
 }
 
 #endif
 
 } // namespace blink