Issue #2737 - Part 1: Base implementation of SVGGeometryElement.

Mostly mechanical changes to generalize path geometry for all SVG draw
elements. No user-exposed changes.

dom/svg/SVGImageElement.h

@@ -8,21 +8,21 @@
 
 #include "nsImageLoadingContent.h"
 #include "nsSVGLength2.h"
-#include "nsSVGPathGeometryElement.h"
 #include "nsSVGString.h"
+#include "SVGGeometryElement.h"
 #include "SVGAnimatedPreserveAspectRatio.h"
 
 nsresult NS_NewSVGImageElement(nsIContent **aResult,
                                already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
 
-typedef nsSVGPathGeometryElement SVGImageElementBase;
-
 class nsSVGImageFrame;
 
 namespace mozilla {
 namespace dom {
 class DOMSVGAnimatedPreserveAspectRatio;
 
+typedef SVGGeometryElement SVGImageElementBase;
+
 class SVGImageElement : public SVGImageElementBase,
                         public nsImageLoadingContent
 {
@@ -57,7 +57,7 @@ public:
 
   NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* name) const override;
 
-  // nsSVGPathGeometryElement methods:
+  // SVGGeometryElement methods:
   virtual bool GetGeometryBounds(Rect* aBounds, const StrokeOptions& aStrokeOptions,
                                  const Matrix& aToBoundsSpace,
                                  const Matrix* aToNonScalingStrokeSpace = nullptr) override;