Update TEST_MAPPING am: f332359348 am: c639baad19

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/itertools/+/1806178

Change-Id: I3db23786497b9ddd235eeaa924d53a8687617fda
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 19817ee..05c6d70 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -2,6 +2,15 @@
 {
   "presubmit": [
     {
+      "name": "base64_device_test_tests_decode"
+    },
+    {
+      "name": "base64_device_test_tests_encode"
+    },
+    {
+      "name": "base64_device_test_tests_helpers"
+    },
+    {
       "name": "unicode-xid_device_test_src_lib"
     },
     {