Remove gpu configs that don't have explicit API.

DOCS_PREVIEW= https://skia.org/?cl=9871

Change-Id: I510473cf91d8bee38d1e33424b1ae7b30dc86968
Reviewed-on: https://skia-review.googlesource.com/9871
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/bench/nanobench.cpp b/bench/nanobench.cpp
index 5e13a29..2f271db 100644
--- a/bench/nanobench.cpp
+++ b/bench/nanobench.cpp
@@ -395,7 +395,7 @@
 }
 
 #if SK_SUPPORT_GPU
-#define kBogusContextType GrContextFactory::kNativeGL_ContextType
+#define kBogusContextType GrContextFactory::kGL_ContextType
 #define kBogusContextOverrides GrContextFactory::ContextOverrides::kNone
 #else
 #define kBogusContextType 0