Simplify incremental paint invalidation

third_party/WebKit/Source/core/paint/SVGModelObjectPaintInvalidator.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 SVGModelObjectPaintInvalidator_h
-#define SVGModelObjectPaintInvalidator_h
-
-#include "platform/graphics/PaintInvalidationReason.h"
-#include "wtf/Allocator.h"
-
-namespace blink {
-
-class LayoutSVGModelObject;
-struct PaintInvalidatorContext;
-
-class SVGModelObjectPaintInvalidator {
-  STACK_ALLOCATED();
-
- public:
-  SVGModelObjectPaintInvalidator(const LayoutSVGModelObject& object,
-                                 const PaintInvalidatorContext& context)
-      : m_object(object), m_context(context) {}
-
-  PaintInvalidationReason invalidatePaintIfNeeded();
-
- private:
-  const LayoutSVGModelObject& m_object;
-  const PaintInvalidatorContext& m_context;
-};
-
-}  // namespace blink
-
-#endif