Factory methods for heap-allocated SkImageFilter objects.

include/effects/SkMatrixConvolutionImageFilter.h

Index: include/effects/SkMatrixConvolutionImageFilter.h
diff --git a/include/effects/SkMatrixConvolutionImageFilter.h b/include/effects/SkMatrixConvolutionImageFilter.h
index 59af83e025275ed29b934fa624151481602f784a..7344420848e0b9fee3fc64f04fb77474b0dfcbfc 100644
--- a/include/effects/SkMatrixConvolutionImageFilter.h
+++ b/include/effects/SkMatrixConvolutionImageFilter.h
@@ -28,6 +28,8 @@ public:
       kClampToBlack_TileMode,  /*!< Fill with transparent black. */
     };
 
+    virtual ~SkMatrixConvolutionImageFilter();
+
     /** Construct a matrix convolution image filter.
         @param kernelSize  The kernel size in pixels, in each dimension (N by M).
         @param kernel      The image processing kernel.  Must contain N * M
@@ -49,17 +51,19 @@ public:
                            passed to filterImage() is used instead.
         @param cropRect    The rectangle to which the output processing will be limited.
     */
-
-    SkMatrixConvolutionImageFilter(const SkISize& kernelSize,
-                                   const SkScalar* kernel,
-                                   SkScalar gain,
-                                   SkScalar bias,
-                                   const SkIPoint& target,
-                                   TileMode tileMode,
-                                   bool convolveAlpha,
-                                   SkImageFilter* input = NULL,
-                                   const CropRect* cropRect = NULL);
-    virtual ~SkMatrixConvolutionImageFilter();
+    static SkMatrixConvolutionImageFilter* Create(const SkISize& kernelSize,
+                                                  const SkScalar* kernel,
+                                                  SkScalar gain,
+                                                  SkScalar bias,
+                                                  const SkIPoint& target,
+                                                  TileMode tileMode,
+                                                  bool convolveAlpha,
+                                                  SkImageFilter* input = NULL,
+                                                  const CropRect* cropRect = NULL) {
+        return SkNEW_ARGS(SkMatrixConvolutionImageFilter, (kernelSize, kernel, gain, bias,
+                                                           target, tileMode, convolveAlpha,
+                                                           input, cropRect));
+    }
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMatrixConvolutionImageFilter)
 
@@ -77,6 +81,19 @@ protected:
                              const SkIRect& bounds) const SK_OVERRIDE;
 #endif
 
+#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
+public:
+#endif
+    SkMatrixConvolutionImageFilter(const SkISize& kernelSize,
+                                   const SkScalar* kernel,
+                                   SkScalar gain,
+                                   SkScalar bias,
+                                   const SkIPoint& target,
+                                   TileMode tileMode,
+                                   bool convolveAlpha,
+                                   SkImageFilter* input = NULL,
+                                   const CropRect* cropRect = NULL);
+
 private:
     SkISize   fKernelSize;
     SkScalar* fKernel;