Merge "Add copy assignment operator for ParcelableHolder" am: f918f617e2

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2180755

Change-Id: I1753ea5217c2dc77ceb565ea947e14a755d9d1f6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>