Fix clip and offset issues of slimmingPaintInvalidation for SPv1

third_party/WebKit/Source/core/paint/PaintInvalidator.h

 // Copyright 2016 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.
 
 #ifndef PaintInvalidator_h
 #define PaintInvalidator_h
 
 #include "platform/geometry/LayoutRect.h"
 #include "platform/graphics/paint/GeometryMapper.h"
 #include "wtf/Vector.h"
@@ skipping 22 matching lines @@
     // for code shared by old code and new code.
     virtual void mapLocalRectToPaintInvalidationBacking(const LayoutObject&, LayoutRect&) const;
 
     const PaintPropertyTreeBuilderContext& treeBuilderContext;
 
     enum ForcedSubtreeInvalidationFlag {
         ForcedSubtreeInvalidationChecking = 1 << 0,
         ForcedSubtreeInvalidationRectUpdate = 1 << 1,
         ForcedSubtreeFullInvalidation = 1 << 2,
         ForcedSubtreeFullInvalidationForStackedContents = 1 << 3,
+        // TODO(crbug.com/637313): This is temporary before we support filters in paint property tree.
+        ForcedSubtreeSlowPathRect = 1 << 4,
     };
     unsigned forcedSubtreeInvalidationFlags = 0;
 
     // The following fields can be null only before PaintInvalidator::updateContext().
 
     // The current paint invalidation container for normal flow objects.
     // It is the enclosing composited object.
     const LayoutBoxModelObject* paintInvalidationContainer = nullptr;
 
     // The current paint invalidation container for stacked contents (stacking contexts or positioned objects).
@@ skipping 26 matching lines @@
     void updatePaintingLayer(const LayoutObject&, PaintInvalidatorContext&);
     void updateContext(const LayoutObject&, PaintInvalidatorContext&);
 
     Vector<const LayoutObject*> m_pendingDelayedPaintInvalidations;
     GeometryMapper m_geometryMapper;
 };
 
 } // namespace blink
 
 #endif // PaintInvalidator_h