Merge "Implement IntoRawFd for ParcelFileDescriptor." am: 7e6ce05500 am: 3d25b57a77 am: 23dcfeb37d am: 2a28b187fe

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1827240

Change-Id: I4796a3a8247cb59bc8aed4bdf35a0abd08e22886