Resolve a few memory leaks in tests.

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:
+    SK_DECLARE_INST_COUNT(SkROLockPixelsPixelRef)
     SkROLockPixelsPixelRef(const SkImageInfo&);
     virtual ~SkROLockPixelsPixelRef();
 
 protected:
     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 {
 public:
+    SK_DECLARE_INST_COUNT(SkGrPixelRef)
     /**
      * Constructs a pixel ref around a GrSurface. If the caller has locked the GrSurface in the
      * cache and would like the pixel ref to unlock it in its destructor then transferCacheLock
      * should be set to true.
      */
     SkGrPixelRef(const SkImageInfo&, GrSurface*, bool transferCacheLock = false);
     virtual ~SkGrPixelRef();
 
     // override from SkPixelRef
     virtual GrTexture* getTexture() SK_OVERRIDE;
 
     SK_DECLARE_UNFLATTENABLE_OBJECT()
 
 protected:
     // overrides from SkPixelRef
     virtual bool onReadPixels(SkBitmap* dst, const SkIRect* subset) SK_OVERRIDE;
     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