Factory methods for heap-allocated SkImageFilter objects.

bench/MergeBench.cpp

Index: bench/MergeBench.cpp
diff --git a/bench/MergeBench.cpp b/bench/MergeBench.cpp
index 1723cbfc2191643d8e50ac5dc7713a500beab63c..cec0ea93e4b2df81caf5601ec4710c71751bb0a5 100644
--- a/bench/MergeBench.cpp
+++ b/bench/MergeBench.cpp
@@ -44,11 +44,11 @@ protected:
 
 private:
     SkImageFilter* mergeBitmaps() {
-        SkImageFilter* first = new SkBitmapSource(fCheckerboard);
-        SkImageFilter* second = new SkBitmapSource(fBitmap);
+        SkImageFilter* first = SkBitmapSource::Create(fCheckerboard);
+        SkImageFilter* second = SkBitmapSource::Create(fBitmap);
         SkAutoUnref aur0(first);
         SkAutoUnref aur1(second);
-        return new SkMergeImageFilter(first, second);
+        return SkMergeImageFilter::Create(first, second);
     }
 
     void make_bitmap() {