Merge "Change source to be a unique_ptr." into main am: e9f4feaf7e am: 448b784898 am: 2a00c06f5b

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

Change-Id: I8cfdf2e1100179cd3cb950a7f59673897ea1b47e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>