Add debug mode to shared mutex.

include/core/SkTypes.h

 /*
  * Copyright 2006 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 SkTypes_DEFINED
 #define SkTypes_DEFINED
 
@@ skipping 88 matching lines @@
 
 #define SK_INIT_TO_AVOID_WARNING    = 0
 
 #ifndef SkDebugf
     SK_API void SkDebugf(const char format[], ...);
 #endif
 
 #ifdef SK_DEBUG
     #define SkASSERT(cond)              SK_ALWAYSBREAK(cond)
     #define SkDEBUGFAIL(message)        SkASSERT(false && message)
+    #define SkDEBUGFAILF(fmt, ...)      SkASSERTF(false, fmt, ##__VA_ARGS__)
     #define SkDEBUGCODE(code)           code
     #define SkDECLAREPARAM(type, var)   , type var
     #define SkPARAM(var)                , var
 //  #define SkDEBUGF(args       )       SkDebugf##args
     #define SkDEBUGF(args       )       SkDebugf args
     #define SkAssertResult(cond)        SkASSERT(cond)
 #else
     #define SkASSERT(cond)
     #define SkDEBUGFAIL(message)
     #define SkDEBUGCODE(code)
@@ skipping 538 matching lines @@
 private:
     void*       fPtr;
     size_t      fSize;  // can be larger than the requested size (see kReuse)
     uint32_t    fStorage[(kSize + 3) >> 2];
 };
 // Can't guard the constructor because it's a template class.
 
 #endif /* C++ */
 
 #endif