Add support for <basic-shape> to 'clip-path' on SVG elements

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

 // Copyright 2015 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 SVGClipPainter_h
 #define SVGClipPainter_h
 
 #include "platform/geometry/FloatRect.h"
 #include "platform/graphics/paint/DisplayItemClient.h"
 #include "wtf/Allocator.h"
 
 namespace blink {
 
 class AffineTransform;
 class GraphicsContext;
 class LayoutObject;
 class LayoutSVGResourceClipper;
 
+enum class ClipperState;
+
 class SVGClipPainter {
     STACK_ALLOCATED();
 public:
-    enum ClipperState {
-        ClipperNotApplied,
-        ClipperAppliedPath,
-        ClipperAppliedMask
-    };
-
     SVGClipPainter(LayoutSVGResourceClipper& clip) : m_clip(clip) { }
 
     bool prepareEffect(const LayoutObject&, const FloatRect&, const FloatRect&, const FloatPoint&, GraphicsContext&, ClipperState&);
     void finishEffect(const LayoutObject&, GraphicsContext&, ClipperState&);
 
 private:
     // Return false if there is a problem drawing the mask.
     bool drawClipAsMask(GraphicsContext&, const LayoutObject&, const FloatRect& targetBoundingBox,
         const FloatRect& targetPaintInvalidationRect, const AffineTransform&, const FloatPoint&);
 
     LayoutSVGResourceClipper& m_clip;
 };
 
 } // namespace blink
 
 #endif // SVGClipPainter_h