Add test_name as tag to result_db.

Bug: 1157340
Change-Id: I8d261a7811e0c785080e2b80419ea8af98bf53d6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2585387Reviewed-by: Chan Li <chanli@chromium.org>
Commit-Queue: benjamin joyce <bjoyce@chromium.org>
Cr-Commit-Position: refs/heads/master@{#835857}

build/android/pylib/base/result_sink.py

@@ -91,6 +91,10 @@ class ResultSinkClient(object):
         'expected': expected,
         'status': status,
         'summaryHtml': test_log_formatted,
+        'tags': [{
+            'key': 'test_name',
+            'value': test_id,
+        }],
         'testId': test_id,
     }
     artifacts = artifacts or {}