Revert of Blink hasn't rolled yet, better. (patchset #1 id:1 of https://codereview.chromium.org/758693002/)

Reason for revert:
Try again, for real.

Original issue's description:
> Blink hasn't rolled yet, better.
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/89ff0846fd9dacf5f081373746624d450a5f8c26

TBR=mtklein@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/754303004
diff --git a/include/core/SkRefCnt.h b/include/core/SkRefCnt.h
index 38b6d34..5d394f0 100644
--- a/include/core/SkRefCnt.h
+++ b/include/core/SkRefCnt.h
@@ -42,10 +42,10 @@
 #endif
     }
 
-//#ifdef SK_DEBUG
+#ifdef SK_DEBUG
     /** Return the reference count. Use only for debugging. */
     int32_t getRefCnt() const { return fRefCnt; }
-//#endif
+#endif
 
     /** May return true if the caller is the only owner.
      *  Ensures that all previous owner's actions are complete.
@@ -273,7 +273,6 @@
         }
     }
     void  deref() const { this->unref(); }  // Chrome prefers to call deref().
-    int32_t getRefCnt() const { return fRefCnt; }
 
 private:
     mutable int32_t fRefCnt;