Tighten up Binder.clearCallingIdentity() usage.

Partial cherry-pick of ag/12771225 to avoid merge conflicts.

Test: builds
Bug: 155703208
Merged-In: I832c9d70c3dfcd8d669cf71939d97837becc973a
Change-Id: Iac7c482012639ac45658f9e32fc1b9b152b01532
1 file changed