Use DEFINE_TESTCLASS_SHORT macro in tests.

tests/ShaderOpacityTest.cpp

Index: tests/ShaderOpacityTest.cpp
diff --git a/tests/ShaderOpacityTest.cpp b/tests/ShaderOpacityTest.cpp
index c3dc888ba35098632b2fd7ab3669ea08fe62142f..d514516808cafdf26022e93b2aaf53a88f630dc6 100644
--- a/tests/ShaderOpacityTest.cpp
+++ b/tests/ShaderOpacityTest.cpp
@@ -1,11 +1,12 @@
-
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+
 #include "Test.h"
+#include "TestClassDef.h"
 #include "SkShader.h"
 #include "SkGradientShader.h"
 #include "SkColorShader.h"
@@ -108,12 +109,8 @@ static void test_color(skiatest::Reporter* reporter)
     REPORTER_ASSERT(reporter, colorShader4.isOpaque());
 }
 
-static void test_shader_opacity(skiatest::Reporter* reporter)
-{
+DEF_TEST(ShaderOpacity, reporter) {
     test_gradient(reporter);
     test_color(reporter);
     test_bitmap(reporter);
 }
-
-#include "TestClassDef.h"
-DEFINE_TESTCLASS("ShaderOpacity", ShaderOpacityTestClass, test_shader_opacity)