Replace uses of GR_DEBUGCODE by SkDEBUGCODE.

include/gpu/GrConfig.h

Index: include/gpu/GrConfig.h
diff --git a/include/gpu/GrConfig.h b/include/gpu/GrConfig.h
index 060682e17b1dd5c2999fa5516d0fbc967ae85c1a..e3fa1a44e908752ab51dadb4234c0197ced6256b 100644
--- a/include/gpu/GrConfig.h
+++ b/include/gpu/GrConfig.h
@@ -236,17 +236,6 @@ inline void GrDebugCrash() { SkASSERT(false); }
 inline void GrDebugCrash(const char* msg) { GrPrintf(msg); SkASSERT(false); }
 
 /**
- *  GR_DEBUGCODE compiles the code X in debug builds only
- */
-#if !defined(GR_DEBUGCODE)
-    #ifdef SK_DEBUG
-        #define GR_DEBUGCODE(X) X
-    #else
-        #define GR_DEBUGCODE(X)
-    #endif
-#endif
-
-/**
  *  GR_STATIC_ASSERT is a compile time assertion. Depending on the platform
  *  it may print the message in the compiler log. Obviously, the condition must
  *  be evaluatable at compile time.