Fix NoGPU bot

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=5126

Change-Id: I34299845b6d20f219722da6a3135070369010555
Reviewed-on: https://skia-review.googlesource.com/5126
Reviewed-by: Matt Sarett <msarett@google.com>
diff --git a/tests/SurfaceTest.cpp b/tests/SurfaceTest.cpp
index e613e1d..e08b866 100644
--- a/tests/SurfaceTest.cpp
+++ b/tests/SurfaceTest.cpp
@@ -14,6 +14,7 @@
 #include "SkPath.h"
 #include "SkRRect.h"
 #include "SkSurface.h"
+#include "SkSurface_Base.h"
 #include "SkUtils.h"
 #include "Test.h"