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

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

Change-Id: Idb09ef5316005781cbd67dab7f71e7c629ed079b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>