Merge "Add XmlSerializerPerfTest" am: 270337f961 am: 906e606242 am: e0b8fdd5d3

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2259542

Change-Id: I9afdbb094892180208d9a9ecbcc5b390b22a40e2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>