Cleanup: Go with SkDebugf instead of GrPrintf.

include/gpu/GrConfig.h

Index: include/gpu/GrConfig.h
diff --git a/include/gpu/GrConfig.h b/include/gpu/GrConfig.h
index 8e65f51b25f46be7e13b0ff10c0f91d7b6ef3d83..e70c978fc000d8ffdb1d45fa2890c57380bf4180 100644
--- a/include/gpu/GrConfig.h
+++ b/include/gpu/GrConfig.h
@@ -98,12 +98,6 @@ typedef unsigned __int64 uint64_t;
 // postconfig section:
 //
 
-// By now we must have a GR_..._BUILD symbol set to 1, and a decision about
-// debug -vs- release
-//
-
-#define GrPrintf SkDebugf
-
 /**
  *  GR_STRING makes a string of X where X is expanded before conversion to a string
  *  if X itself contains macros.
@@ -167,7 +161,7 @@ typedef unsigned __int64 uint64_t;
     #define GR_ALWAYSASSERT(COND)                                        \
         do {                                                             \
             if (!(COND)) {                                               \
-                GrPrintf("%s %s failed\n", GR_FILE_AND_LINE_STR, #COND); \
+                SkDebugf("%s %s failed\n", GR_FILE_AND_LINE_STR, #COND); \
                 GR_ALWAYSBREAK;                                          \
             }                                                            \
         } while (false)