change pixelref to not inherit from SkFlattenable

include/core/SkMallocPixelRef.h

 /*
  * Copyright 2008 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkMallocPixelRef_DEFINED
 #define SkMallocPixelRef_DEFINED
@@ skipping 64 matching lines @@
 
     void* getAddr() const { return fStorage; }
 
     class PRFactory : public SkPixelRefFactory {
     public:
         virtual SkPixelRef* create(const SkImageInfo&,
                                    size_t rowBytes,
                                    SkColorTable*) SK_OVERRIDE;
     };
 
+#ifdef SK_SUPPORT_LEGACY_PIXELREF_UNFLATTENABLE
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMallocPixelRef)
+#endif
 
 protected:
     // The ownPixels version of this constructor is deprecated.
     SkMallocPixelRef(const SkImageInfo&, void* addr, size_t rb, SkColorTable*,
                      bool ownPixels);
+#ifdef SK_SUPPORT_LEGACY_PIXELREF_UNFLATTENABLE
     SkMallocPixelRef(SkReadBuffer& buffer);
+#endif
     virtual ~SkMallocPixelRef();
 
     virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
     virtual void onUnlockPixels() SK_OVERRIDE;
-    virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
     virtual size_t getAllocatedSizeInBytes() const SK_OVERRIDE;
 
 private:
     void*           fStorage;
     SkColorTable*   fCTable;
     size_t          fRB;
     ReleaseProc     fReleaseProc;
     void*           fReleaseProcContext;
 
     SkMallocPixelRef(const SkImageInfo&, void* addr, size_t rb, SkColorTable*,
                      ReleaseProc proc, void* context);
 
     typedef SkPixelRef INHERITED;
 };
 
 
 #endif