Add a DEF_GPUTEST() macro.

tests/GrDrawTargetTest.cpp

Index: tests/GrDrawTargetTest.cpp
diff --git a/tests/GrDrawTargetTest.cpp b/tests/GrDrawTargetTest.cpp
index f2bcdc415a629069b150f1b60001f853d3c5a21c..78d9025a2d05aa1ea1fdaacf41d46172bf20d8fe 100644
--- a/tests/GrDrawTargetTest.cpp
+++ b/tests/GrDrawTargetTest.cpp
@@ -13,6 +13,7 @@
 #include "GrGpu.h"
 #include "GrDrawTargetCaps.h"
 #include "Test.h"
+#include "TestClassDef.h"
 
 static void test_print(skiatest::Reporter*, const GrDrawTargetCaps* caps) {
     // This used to assert.
@@ -20,7 +21,7 @@ static void test_print(skiatest::Reporter*, const GrDrawTargetCaps* caps) {
     SkASSERT(!result.isEmpty());
 }
 
-static void TestGrDrawTarget(skiatest::Reporter* reporter, GrContextFactory* factory) {
+DEF_GPUTEST(GrDrawTarget, reporter, factory) {
     for (int type = 0; type < GrContextFactory::kLastGLContextType; ++type) {
         GrContextFactory::GLContextType glType = static_cast<GrContextFactory::GLContextType>(type);
 
@@ -33,7 +34,4 @@ static void TestGrDrawTarget(skiatest::Reporter* reporter, GrContextFactory* fac
     }
 }
 
-#include "TestClassDef.h"
-DEFINE_GPUTESTCLASS("GrDrawTarget", TestGrDrawTargetClass, TestGrDrawTarget)
-
 #endif