Add a release procedure to SkMallocPixelRef; remove SkDataPixelRef

src/image/SkImage_Raster.cpp

Index: src/image/SkImage_Raster.cpp
diff --git a/src/image/SkImage_Raster.cpp b/src/image/SkImage_Raster.cpp
index 807c19e79d4941522f75b43d67c88a896829b102..819c08f0514d39cef69492b4e7b7d1f5cfa13e63 100644
--- a/src/image/SkImage_Raster.cpp
+++ b/src/image/SkImage_Raster.cpp
@@ -10,7 +10,7 @@
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkData.h"
-#include "SkDataPixelRef.h"
+#include "SkMallocPixelRef.h"
 
 class SkImage_Raster : public SkImage_Base {
 public:
@@ -85,7 +85,9 @@ SkImage* SkImage_Raster::NewEmpty() {
 SkImage_Raster::SkImage_Raster(const Info& info, SkData* data, size_t rowBytes)
         : INHERITED(info.fWidth, info.fHeight) {
     fBitmap.setConfig(info, rowBytes);
-    fBitmap.setPixelRef(SkNEW_ARGS(SkDataPixelRef, (info, data)))->unref();
+    SkAutoTUnref<SkPixelRef> ref(
+        SkMallocPixelRef::NewWithData(info, rowBytes, NULL, data, 0));
+    fBitmap.setPixelRef(ref, 0);
     fBitmap.setImmutable();
 }