Add '... implement SVGUnitTypes' to a bunch of SVG*Elements

third_party/WebKit/Source/core/svg/SVGClipPathElement.h

 /*
  * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 18 matching lines @@
 
 namespace blink {
 
 class LayoutObject;
 
 class SVGClipPathElement final : public SVGGraphicsElement {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   DECLARE_NODE_FACTORY(SVGClipPathElement);
+
+  enum {
+    kSvgUnitTypeUnknown = SVGUnitTypes::kSvgUnitTypeUnknown,

[foolip, 2016/10/17 12:09:54]

If the enum is moved from SVGUnitTypes.h to the most-derived common ancestor
(SVGElement?) would this become simpler and could SVGUnitTypes.h/cpp be closer
to empty?

[fs, 2016/10/17 12:40:21]

That ought to do it from a scoping perspective, yes (and so would an C++ mixin
too I guess.) Not sure if that in an of itself would help make
SVGUnitTypes.cpp/h emptier though (the bindings generated for SVGUnitTypes still
reference the class, although I don't see that it actually does anything with
it.)

+    kSvgUnitTypeUserspaceonuse = SVGUnitTypes::kSvgUnitTypeUserspaceonuse,
+    kSvgUnitTypeObjectboundingbox = SVGUnitTypes::kSvgUnitTypeObjectboundingbox
+  };
+
   SVGAnimatedEnumeration<SVGUnitTypes::SVGUnitType>* clipPathUnits() {
     return m_clipPathUnits.get();
   }
 
   bool supportsFocus() const override { return false; }
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   explicit SVGClipPathElement(Document&);
 
   bool needsPendingResourceHandling() const override { return false; }
 
   void svgAttributeChanged(const QualifiedName&) override;
   void childrenChanged(const ChildrenChange&) override;
 
   LayoutObject* createLayoutObject(const ComputedStyle&) override;
 
   Member<SVGAnimatedEnumeration<SVGUnitTypes::SVGUnitType>> m_clipPathUnits;
 };
 
 }  // namespace blink
 
 #endif  // SVGClipPathElement_h