Merge "Add copy assignment operator for ParcelableHolder" am: f918f617e2 am: 19cb4237bb

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

Change-Id: I67ce0b2504e4cf4ac280e3b636349cfb7fd04b05
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>