Make it explicit that some validate methods are debug only ...

include/core/SkWeakRefCnt.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkWeakRefCnt_DEFINED
 #define SkWeakRefCnt_DEFINED
 
@@ skipping 55 matching lines @@
 #ifdef SK_DEBUG
         SkASSERT(fWeakCnt == 1);
         fWeakCnt = 0;
 #endif
     }
 
     /** Return the weak reference count.
     */
     int32_t getWeakCnt() const { return fWeakCnt; }
 
+#ifdef SK_DEBUG
     void validate() const {
-        SkRefCnt::validate();
+        this->INHERITED::validate();
         SkASSERT(fWeakCnt > 0);
     }
+#endif
 
     /** Creates a strong reference from a weak reference, if possible. The
         caller must already be an owner. If try_ref() returns true the owner
         is in posession of an additional strong reference. Both the original
         reference and new reference must be properly unreferenced. If try_ref()
         returns false, no strong reference could be created and the owner's
         reference is in the same state as before the call.
     */
     bool SK_WARN_UNUSED_RESULT try_ref() const {
         if (sk_atomic_conditional_inc(&fRefCnt) != 0) {
@@ skipping 60 matching lines @@
         weak_unref();
     }
 
     /* Invariant: fWeakCnt = #weak + (fRefCnt > 0 ? 1 : 0) */
     mutable int32_t fWeakCnt;
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif