Annotate `CompilerTestCase::setUp` with `@Before`.
This is done so that it will be invoked by subclasses without their own setup method when those subclasses move to JUnit4.
@@ -51,6 +51,7 @@ import java.util.List;
import java.util.Map;
import java.util.Set;
import junit.framework.TestCase;
+import org.junit.Before;
/**
* <p>Base class for testing JS compiler classes that change
@@ -576,6 +577,7 @@ public abstract class CompilerTestCase extends TestCase {
// Overridden here so that we can easily find all classes that override.
@Override
+ @Before
protected void setUp() throws Exception {
super.setUp();
