Sort filenames in Android.bp

Change-Id: I509bc18df69d527e05c20252343a8f82f34f58c6
diff --git a/Android.bp b/Android.bp
index f95f207..cbd87bc 100644
--- a/Android.bp
+++ b/Android.bp
@@ -851,25 +851,21 @@
         "aosp/cleanup_previous_update_action_unittest.cc",
         "aosp/dynamic_partition_control_android_unittest.cc",
         "aosp/update_attempter_android_unittest.cc",
-        "download_action_android_unittest.cc",
         "certificate_checker_unittest.cc",
-        "libcurl_http_fetcher_unittest.cc",
         "common/http_fetcher_unittest.cc",
         "common/proxy_resolver_unittest.cc",
         "common/subprocess_unittest.cc",
         "common/utils_unittest.cc",
+        "download_action_android_unittest.cc",
+        "libcurl_http_fetcher_unittest.cc",
         "payload_consumer/bzip_extent_writer_unittest.cc",
         "payload_consumer/cached_file_descriptor_unittest.cc",
         "payload_consumer/cow_writer_file_descriptor_unittest.cc",
         "payload_consumer/certificate_parser_android_unittest.cc",
         "payload_consumer/delta_performer_integration_test.cc",
         "payload_consumer/delta_performer_unittest.cc",
-        "payload_consumer/partition_writer_unittest.cc",
         "payload_consumer/extent_reader_unittest.cc",
         "payload_consumer/extent_writer_unittest.cc",
-        "payload_consumer/snapshot_extent_writer_unittest.cc",
-        "payload_consumer/xor_extent_writer_unittest.cc",
-        "payload_consumer/vabc_partition_writer_unittest.cc",
         "payload_consumer/extent_map_unittest.cc",
         "payload_consumer/fake_file_descriptor.cc",
         "payload_consumer/file_descriptor_utils_unittest.cc",
@@ -878,8 +874,12 @@
         "payload_consumer/install_plan_unittest.cc",
         "payload_consumer/install_operation_executor_unittest.cc",
         "payload_consumer/partition_update_generator_android_unittest.cc",
+        "payload_consumer/partition_writer_unittest.cc",
         "payload_consumer/postinstall_runner_action_unittest.cc",
+        "payload_consumer/snapshot_extent_writer_unittest.cc",
+        "payload_consumer/vabc_partition_writer_unittest.cc",
         "payload_consumer/verity_writer_android_unittest.cc",
+        "payload_consumer/xor_extent_writer_unittest.cc",
         "payload_consumer/xz_extent_writer_unittest.cc",
         "update_status_utils_unittest.cc",
     ],