Merge "Change source to be a unique_ptr." into main am: e9f4feaf7e

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2768490

Change-Id: I754a47b102834e1a20ca1091af36854a0c6ec33f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>