Fix DocumentUI's perf tests compile failure.

It compiled locally, but not on the APCT.

Bug: 27370274
Change-Id: I7f10f3bf5b370d8e92311febfdcae133148e1312

1 files changed, 1 insertions, 2 deletions

diff --git a/perf-tests/src/com/android/documentsui/FilesActivityPerfTest.java b/perf-tests/src/com/android/documentsui/FilesActivityPerfTest.java
index 8c39aac43..05fd2f7b1 100644
--- a/perf-tests/src/com/android/documentsui/FilesActivityPerfTest.java
+++ b/perf-tests/src/com/android/documentsui/FilesActivityPerfTest.java
@@ -81,10 +81,9 @@ public class FilesActivityPerfTest extends ActivityTest<FilesActivity> {
         final BaseActivity activity = getActivity();
 
         final List<Long> measurements = new ArrayList<Long>();
-        CountDownLatch signal;
         EventListener listener;
         for (int i = 0; i < 10; i++) {
-            signal = new CountDownLatch(1);
+            final CountDownLatch signal = new CountDownLatch(1);
             listener = new EventListener() {
                 @Override
                 public void onDirectoryNavigated(Uri uri) {