Merge "Set default metadata/XML/attribute set value before parsing" into tm-qpr-dev am: a3d8ef13

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19706773



Change-Id: Id5c2ee3ed8d633ef9a45852b48ada13f6b9f4d84
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>