First step of PaintInvalidator implementation

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