Change SkImageFilter's cropRect from SkIRect to a CropRect struct

include/effects/SkColorFilterImageFilter.h

Index: include/effects/SkColorFilterImageFilter.h
diff --git a/include/effects/SkColorFilterImageFilter.h b/include/effects/SkColorFilterImageFilter.h
index 314ab070b65e827870b33d3c118c62e1a9383db6..c4ac6b2a8c464c079acddedbec23ac65b8c9b65f 100755
--- a/include/effects/SkColorFilterImageFilter.h
+++ b/include/effects/SkColorFilterImageFilter.h
@@ -16,7 +16,7 @@ class SK_API SkColorFilterImageFilter : public SkImageFilter {
 public:
     static SkColorFilterImageFilter* Create(SkColorFilter* cf,
                                             SkImageFilter* input = NULL,
-                                            const SkIRect* cropRect = NULL);
+                                            const CropRect* cropRect = NULL);
     virtual ~SkColorFilterImageFilter();
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkColorFilterImageFilter)
@@ -33,7 +33,7 @@ protected:
 private:
     SkColorFilterImageFilter(SkColorFilter* cf,
                              SkImageFilter* input,
-                             const SkIRect* cropRect = NULL);
+                             const CropRect* cropRect = NULL);
     SkColorFilter*  fColorFilter;
 
     typedef SkImageFilter INHERITED;