Moved source to match upstream file structure

Will make it simpler to update JUnit source.

Bug: 33613916
Test: make checkbuild
Change-Id: I76984a6defd3e40f34eea995e6ed865d32d53da3

1 files changed, 22 insertions, 0 deletions

diff --git a/src/main/java/org/junit/runners/JUnit4.java b/src/main/java/org/junit/runners/JUnit4.java
new file mode 100644
index 0000000..1e1f347
--- /dev/null
+++ b/src/main/java/org/junit/runners/JUnit4.java
@@ -0,0 +1,22 @@
+package org.junit.runners;
+
+import org.junit.runners.model.InitializationError;
+
+/**
+ * Aliases the current default JUnit 4 class runner, for future-proofing. If
+ * future versions of JUnit change the default Runner class, they will also
+ * change the definition of this class. Developers wanting to explicitly tag a
+ * class as a JUnit 4 class should use {@code @RunWith(JUnit4.class)}, not,
+ * for example in JUnit 4.5, {@code @RunWith(BlockJUnit4ClassRunner.class)}.
+ * This is the only way this class should be used--any extension that
+ * depends on the implementation details of this class is likely to break
+ * in future versions.
+ */
+public final class JUnit4 extends BlockJUnit4ClassRunner {
+	/**
+	 * Constructs a new instance of the default runner
+	 */
+	public JUnit4(Class<?> klass) throws InitializationError {
+		super(klass);
+	}
+}