Maintain Parcel ABI

Makes sure we don't change the memory layout of the Parcel class
to maintain binary compatibility with prebuilts linking against
libbinder.

Bug: 25004154
Change-Id: I656687497f08bb85cefda796aafa2341e601e30a
(cherry picked from commit 6bb3114246f6f6aa406e65452dbaa12b135029ea)
2 files changed