Factory methods for heap-allocated SkImageFilter objects.

include/effects/SkBitmapSource.h

Index: include/effects/SkBitmapSource.h
diff --git a/include/effects/SkBitmapSource.h b/include/effects/SkBitmapSource.h
index fcc1db97bc758e74dd6737833f2a7b77c779b5c1..9740e0e6c690ae6eb0d4aad1538dfade3e3b032e 100644
--- a/include/effects/SkBitmapSource.h
+++ b/include/effects/SkBitmapSource.h
@@ -13,8 +13,13 @@
 
 class SK_API SkBitmapSource : public SkImageFilter {
 public:
-    explicit SkBitmapSource(const SkBitmap& bitmap);
-    SkBitmapSource(const SkBitmap& bitmap, const SkRect& srcRect, const SkRect& dstRect);
+    static SkBitmapSource* Create(const SkBitmap& bitmap) {
+        return SkNEW_ARGS(SkBitmapSource, (bitmap));
+    }
+    static SkBitmapSource* Create(const SkBitmap& bitmap, const SkRect& srcRect,
+                                  const SkRect& dstRect) {
+        return SkNEW_ARGS(SkBitmapSource, (bitmap, srcRect, dstRect));
+    }
     virtual void computeFastBounds(const SkRect& src, SkRect* dst) const SK_OVERRIDE;
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBitmapSource)
@@ -26,6 +31,12 @@ protected:
                                SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE;
     virtual bool onFilterBounds(const SkIRect& src, const SkMatrix& ctm, SkIRect* dst) const SK_OVERRIDE;
 
+#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
+public:
+#endif
+    explicit SkBitmapSource(const SkBitmap& bitmap);
+    SkBitmapSource(const SkBitmap& bitmap, const SkRect& srcRect, const SkRect& dstRect);
+
 private:
     SkBitmap fBitmap;
     SkRect   fSrcRect, fDstRect;