Factory methods for heap-allocated SkImageFilter objects.

include/effects/SkMergeImageFilter.h

Index: include/effects/SkMergeImageFilter.h
diff --git a/include/effects/SkMergeImageFilter.h b/include/effects/SkMergeImageFilter.h
index 36eaaf3df1776c7b61b47205ab8811efad3275b4..54170a3ec93e71a541e7b9d365a817d2721679e5 100755
--- a/include/effects/SkMergeImageFilter.h
+++ b/include/effects/SkMergeImageFilter.h
@@ -14,14 +14,19 @@
 
 class SK_API SkMergeImageFilter : public SkImageFilter {
 public:
-    SkMergeImageFilter(SkImageFilter* first, SkImageFilter* second,
-                       SkXfermode::Mode = SkXfermode::kSrcOver_Mode,
-                       const CropRect* cropRect = NULL);
-    SkMergeImageFilter(SkImageFilter* filters[], int count,
-                       const SkXfermode::Mode modes[] = NULL,
-                       const CropRect* cropRect = NULL);
     virtual ~SkMergeImageFilter();
 
+    static SkMergeImageFilter* Create(SkImageFilter* first, SkImageFilter* second,
+                                      SkXfermode::Mode mode = SkXfermode::kSrcOver_Mode,
+                                      const CropRect* cropRect = NULL) {
+        return SkNEW_ARGS(SkMergeImageFilter, (first, second, mode, cropRect));
+    }
+    static SkMergeImageFilter* Create(SkImageFilter* filters[], int count,
+                                      const SkXfermode::Mode modes[] = NULL,
+                                      const CropRect* cropRect = NULL) {
+        return SkNEW_ARGS(SkMergeImageFilter, (filters, count, modes, cropRect));
+    }
+
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMergeImageFilter)
 
 protected:
@@ -30,6 +35,16 @@ protected:
 
     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&,
                                SkBitmap* result, SkIPoint* loc) const SK_OVERRIDE;
+
+#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
+public:
+#endif
+    SkMergeImageFilter(SkImageFilter* first, SkImageFilter* second,
+                       SkXfermode::Mode = SkXfermode::kSrcOver_Mode,
+                       const CropRect* cropRect = NULL);
+    SkMergeImageFilter(SkImageFilter* filters[], int count,
+                       const SkXfermode::Mode modes[] = NULL,
+                       const CropRect* cropRect = NULL);
 private:
     uint8_t*            fModes; // SkXfermode::Mode