Revert "Revert of https://codereview.chromium.org/110593003/"

include/gpu/SkGrPixelRef.h

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkGrPixelRef_DEFINED
 #define SkGrPixelRef_DEFINED
 
 #include "SkBitmap.h"
 #include "SkPixelRef.h"
 #include "GrTexture.h"
 #include "GrRenderTarget.h"
 
 
 /**
  *  Common baseclass that implements onLockPixels() by calling onReadPixels().
  *  Since it has a copy, it always returns false for onLockPixelsAreWritable().
  */
 class SK_API SkROLockPixelsPixelRef : public SkPixelRef {
 public:
     SkROLockPixelsPixelRef(const SkImageInfo&);
     virtual ~SkROLockPixelsPixelRef();
 
 protected:
-    // override from SkPixelRef
-    virtual void* onLockPixels(SkColorTable** ptr);
-    virtual void onUnlockPixels();
-    virtual bool onLockPixelsAreWritable() const;   // return false;
+    virtual bool onNewLockPixels(LockRec*) SK_OVERRIDE;
+    virtual void onUnlockPixels() SK_OVERRIDE;
+    virtual bool onLockPixelsAreWritable() const SK_OVERRIDE;   // return false;
 
 private:
     SkBitmap    fBitmap;
     typedef SkPixelRef INHERITED;
 };
 
 /**
  *  PixelRef that wraps a GrSurface
  */
 class SK_API SkGrPixelRef : public SkROLockPixelsPixelRef {
@@ skipping 17 matching lines @@
     virtual SkPixelRef* deepCopy(SkBitmap::Config dstConfig, const SkIRect* subset) SK_OVERRIDE;
 
 private:
     GrSurface*  fSurface;
     bool        fUnlock;   // if true the pixel ref owns a texture cache lock on fSurface
 
     typedef SkROLockPixelsPixelRef INHERITED;
 };
 
 #endif