Hoist "layout size changed" check out of SVGLayoutSupport::layoutChildren

third_party/WebKit/Source/core/layout/svg/SVGLayoutSupport.h

 /**
  * Copyright (C) 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.  All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. 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
@@ skipping 32 matching lines @@
 class ComputedStyle;
 class LayoutSVGRoot;
 class SVGLengthContext;
 class StrokeData;
 class TransformState;
 
 class CORE_EXPORT SVGLayoutSupport {
     STATIC_ONLY(SVGLayoutSupport);
 public:
     // Shares child layouting code between LayoutSVGRoot/LayoutSVG(Hidden)Container
-    static void layoutChildren(LayoutObject*, bool forceLayout, bool transformChanged);
+    static void layoutChildren(LayoutObject*, bool forceLayout, bool transformChanged, bool layoutSizeChanged);
 
     // Layout resources used by this node.
     static void layoutResourcesIfNeeded(const LayoutObject*);
 
     // Helper function determining whether overflow is hidden.
     static bool isOverflowHidden(const LayoutObject*);
 
     // Calculates the paintInvalidationRect in combination with filter, clipper and masker in local coordinates.
     static void intersectPaintInvalidationRectWithResources(const LayoutObject*, FloatRect&);
 
@@ skipping 20 matching lines @@
     static const LayoutObject* pushMappingToContainer(const LayoutObject*, const LayoutBoxModelObject* ancestorToStopAt, LayoutGeometryMap&);
 
     // Shared between SVG layoutObjects and resources.
     static void applyStrokeStyleToStrokeData(StrokeData&, const ComputedStyle&, const LayoutObject&, float dashScaleFactor);
 
     static DashArray resolveSVGDashArray(const SVGDashArray&, const ComputedStyle&, const SVGLengthContext&);
 
     // Determines if any ancestor's transform has changed.
     static bool transformToRootChanged(const LayoutObject*);
 
+    // Determines if any ancestor's layout size has changed.
+    static bool layoutSizeOfNearestViewportChanged(const LayoutObject*);
+
     // FIXME: These methods do not belong here.
     static const LayoutSVGRoot* findTreeRootObject(const LayoutObject*);
 
     // Helper method for determining if a LayoutObject marked as text (isText()== true)
     // can/will be laid out as part of a <text>.
     static bool isLayoutableTextNode(const LayoutObject*);
 
     // Determines whether a svg node should isolate or not based on ComputedStyle.
     static bool willIsolateBlendingDescendantsForStyle(const ComputedStyle&);
     static bool willIsolateBlendingDescendantsForObject(const LayoutObject*);
     template<typename LayoutObjectType>
     static bool computeHasNonIsolatedBlendingDescendants(const LayoutObjectType*);
     static bool isIsolationRequired(const LayoutObject*);
 
     static AffineTransform deprecatedCalculateTransformToLayer(const LayoutObject*);
     static float calculateScreenFontSizeScalingFactor(const LayoutObject*);
 
     static LayoutObject* findClosestLayoutSVGText(LayoutObject*, const FloatPoint&);
 
 private:
     static void updateObjectBoundingBox(FloatRect& objectBoundingBox, bool& objectBoundingBoxValid, LayoutObject* other, FloatRect otherBoundingBox);
-    static bool layoutSizeOfNearestViewportChanged(const LayoutObject* start);
 };
 
 class SubtreeContentTransformScope {
     STACK_ALLOCATED();
 public:
     SubtreeContentTransformScope(const AffineTransform&);
     ~SubtreeContentTransformScope();
 
     static AffineTransform currentContentTransformation() { return AffineTransform(s_currentContentTransformation); }
 
@@ skipping 10 matching lines @@
             return true;
         if (child->hasNonIsolatedBlendingDescendants() && !willIsolateBlendingDescendantsForObject(child))
             return true;
     }
     return false;
 }
 
 } // namespace blink
 
 #endif // SVGLayoutSupport_h