Benchmark: Add SDK Extractor

Test: adb shell am instrument -w -r -e class\
      'com.android.media.benchmark.tests.ExtractorTest'\
      com.android.media.benchmark/androidx.test.runner.AndroidJUnitRunner

Bug: 140051680

Change-Id: Ib1e2f8f360f7c6cd747c5ca43581de41fd966c60
diff --git a/media/tests/benchmark/Android.bp b/media/tests/benchmark/Android.bp
index 8a7a59f..de408dd 100644
--- a/media/tests/benchmark/Android.bp
+++ b/media/tests/benchmark/Android.bp
@@ -17,4 +17,5 @@
 subdirs = [
     "src",
     "tests",
-]
\ No newline at end of file
+    "MediaBenchmarkTest",
+]