hide SkBitmap::setConfig

bench/BitmapScaleBench.cpp

Index: bench/BitmapScaleBench.cpp
diff --git a/bench/BitmapScaleBench.cpp b/bench/BitmapScaleBench.cpp
index f6c2da17a98f58169558e594bd59409d148461a4..93e10fa43cc04723a15cc5569eaf68e000d136b7 100644
--- a/bench/BitmapScaleBench.cpp
+++ b/bench/BitmapScaleBench.cpp
@@ -57,14 +57,10 @@ protected:
     }
 
     virtual void onPreDraw() {
-        fInputBitmap.setConfig(SkBitmap::kARGB_8888_Config,
-                               fInputSize, fInputSize, 0, kOpaque_SkAlphaType);
-        fInputBitmap.allocPixels();
+        fInputBitmap.allocN32Pixels(fInputSize, fInputSize, true);
         fInputBitmap.eraseColor(SK_ColorWHITE);
 
-        fOutputBitmap.setConfig(SkBitmap::kARGB_8888_Config,
-                                fOutputSize, fOutputSize, 0, kOpaque_SkAlphaType);
-        fOutputBitmap.allocPixels();
+        fOutputBitmap.allocN32Pixels(fOutputSize, fOutputSize, true);
 
         fMatrix.setScale( scale(), scale() );
     }