Update TEST_MAPPING am: 236d4349c2

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/structopt/+/1805838

Change-Id: Iee650867227d70c1172a93f561b1727b5fd93e07
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 0f4f93c..d364321 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -3,6 +3,15 @@
   "presubmit": [
     {
       "name": "authfs_device_test_src_lib"
+    },
+    {
+      "name": "base64_device_test_tests_decode"
+    },
+    {
+      "name": "base64_device_test_tests_encode"
+    },
+    {
+      "name": "base64_device_test_tests_helpers"
     }
   ]
 }