[automerger skipped] Merge "Fix missed refactor of serial" into pie-vts-dev

am: d4f9ad2c59  -s ours

Change-Id: I95f73d92932ffa352b6299c7bb8d5fe4ec71e023
This commit is contained in:
sqian 2018-08-28 16:47:55 -07:00 committed by android-build-merger
commit 6907402d39

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