Style Change: NULL->nullptr
DOCS_PREVIEW= https://skia.org/?cl=1316233002

Review URL: https://codereview.chromium.org/1316233002
diff --git a/tests/GLInterfaceValidationTest.cpp b/tests/GLInterfaceValidationTest.cpp
index 1448f28..7af34a7 100755
--- a/tests/GLInterfaceValidationTest.cpp
+++ b/tests/GLInterfaceValidationTest.cpp
@@ -24,7 +24,7 @@
         if (GrContextFactory::kNVPR_GLContextType == glCtxType &&
             factory->getGLContext(GrContextFactory::kNative_GLContextType) &&
             !factory->getGLContext(GrContextFactory::kNative_GLContextType)->gl()->hasExtension("GL_NV_path_rendering")) {
-            REPORTER_ASSERT(reporter, NULL == glCtx);
+            REPORTER_ASSERT(reporter, nullptr == glCtx);
             continue;
         }