Restore TestRepository.getClock(), it is used by Gerrit/Gitiles

Change-Id: I88880f18998e33377c0c684cbd8007b5d27d76e7
Signed-off-by: Terry Parker <tparker@google.com>

org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/TestRepository.java

@@ -208,6 +208,17 @@ public class TestRepository<R extends Repository> {
 		return new Date(mockSystemReader.getCurrentTime());
 	}
 
+	/**
+	 * @return current date.
+	 *
+	 * @deprecated Use {@link #getDate()} instead.
+	 */
+	@Deprecated
+	public Date getClock() {
+		// Remove once Gitiles and Gerrit are using the updated JGit.
+		return getDate();
+	}
+
 	/** @return timezone used for default identities. */
 	public TimeZone getTimeZone() {
 		return mockSystemReader.getTimeZone();