Expand pixelref to return SkImageInfo and rowbytes

src/image/SkDataPixelRef.h

Index: src/image/SkDataPixelRef.h
diff --git a/src/image/SkDataPixelRef.h b/src/image/SkDataPixelRef.h
index 6b15802b97c965b08e08211104c51eb96f2d2332..7f04f12af99e71820fb64f600804eafaa67a6d0b 100644
--- a/src/image/SkDataPixelRef.h
+++ b/src/image/SkDataPixelRef.h
@@ -14,20 +14,23 @@ class SkData;
 
 class SkDataPixelRef : public SkPixelRef {
 public:
-            SkDataPixelRef(SkData* data);
+            SkDataPixelRef(const SkImageInfo&, SkData* data, size_t rowBytes);
     virtual ~SkDataPixelRef();
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDataPixelRef)
 
 protected:
-    virtual void* onLockPixels(SkColorTable**) SK_OVERRIDE;
+    virtual bool onGetInfo(SkImageInfo*) SK_OVERRIDE;
+    virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
     virtual void onUnlockPixels() SK_OVERRIDE;
 
     SkDataPixelRef(SkFlattenableReadBuffer& buffer);
     virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
 
 private:
-    SkData* fData;
+    SkImageInfo fInfo;
+    SkData*     fData;
+    size_t      fRB;
 
     typedef SkPixelRef INHERITED;
 };