Remove mutual dependency of gr and skgr.
http://codereview.appspot.com/5879043/


git-svn-id: http://skia.googlecode.com/svn/trunk@3467 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/gpu/GrConfig.h b/include/gpu/GrConfig.h
index 1dfe199..e25859b 100644
--- a/include/gpu/GrConfig.h
+++ b/include/gpu/GrConfig.h
@@ -182,7 +182,7 @@
 // debug -vs- release
 //
 
-extern GR_API void GrPrintf(const char format[], ...);
+#define GrPrintf SkDebugf
 
 /**
  *  GR_STRING makes a string of X where X is expanded before conversion to a string