[automerger] Don't pad before calling writeInPlace(). am: 732132b765 am: a6a5c3fa47 am: 325909a4e4 am: 953b08b7c0 am: 32da4bbe1e am: a01397282d am: 6fccb21cd7

Change-Id: Id867385a5a598489152c7b978cfd40e726f7dfb9