Factory methods for heap-allocated SkImageFilter objects.

bench/BlurImageFilterBench.cpp

Index: bench/BlurImageFilterBench.cpp
diff --git a/bench/BlurImageFilterBench.cpp b/bench/BlurImageFilterBench.cpp
index 1cc205a70c7d82d683261f2cf80fd2e8d6981939..bd36b5b3c44445ad22e9fb6b2b29a46d48de6516 100644
--- a/bench/BlurImageFilterBench.cpp
+++ b/bench/BlurImageFilterBench.cpp
@@ -44,7 +44,7 @@ protected:
 
     virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         SkPaint paint;
-        paint.setImageFilter(new SkBlurImageFilter(fSigmaX, fSigmaY))->unref();
+        paint.setImageFilter(SkBlurImageFilter::Create(fSigmaX, fSigmaY))->unref();
 
         for (int i = 0; i < loops; i++) {
             canvas->drawBitmap(fCheckerboard, 0, 0, &paint);