Clean up SkImageFilter constructors.

include/effects/SkXfermodeImageFilter.h

Index: include/effects/SkXfermodeImageFilter.h
diff --git a/include/effects/SkXfermodeImageFilter.h b/include/effects/SkXfermodeImageFilter.h
index a5404f91c584737a4137df68f843da82b58977a1..05f96c49112760dc94a2626464a1975dc5be72f4 100644
--- a/include/effects/SkXfermodeImageFilter.h
+++ b/include/effects/SkXfermodeImageFilter.h
@@ -26,7 +26,8 @@ public:
     static SkXfermodeImageFilter* Create(SkXfermode* mode, SkImageFilter* background,
                                          SkImageFilter* foreground = NULL,
                                          const CropRect* cropRect = NULL) {
-        return SkNEW_ARGS(SkXfermodeImageFilter, (mode, background, foreground, cropRect));
+        SkImageFilter* inputs[2] = { background, foreground };
+        return SkNEW_ARGS(SkXfermodeImageFilter, (mode, inputs, cropRect));
     }
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkXfermodeImageFilter)
@@ -43,8 +44,8 @@ public:
 #endif
 
 protected:
-    SkXfermodeImageFilter(SkXfermode* mode, SkImageFilter* background,
-                          SkImageFilter* foreground, const CropRect* cropRect);
+    SkXfermodeImageFilter(SkXfermode* mode, SkImageFilter* inputs[2],
+                          const CropRect* cropRect);
     explicit SkXfermodeImageFilter(SkReadBuffer& buffer);
     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;