gfxMatrix is a struct, not a class b=370051 r=jwatt sr=tor

layout/svg/base/src/nsSVGUtils.h

@@ -71,7 +71,7 @@ class gfxContext;
 class gfxASurface;
 class nsIRenderingContext;
 struct gfxRect;
-class gfxMatrix;
+struct gfxMatrix;
 
 #ifndef M_PI
 #define M_PI 3.14159265358979323846