tree fdd78bde21e2fac1286c31649f2ec083df4c94db
parent 0676aa18ab81e8d356c5ee14b89dc26a5205ada8
author Jeff Sharkey <jsharkey@android.com> 1474419286 -0600
committer Jeff Sharkey <jsharkey@android.com> 1474498764 -0600

Rename should behave like create: avoid conflict.

When we create a file that already exists, we try attaching a suffix
like "(1)" to the filename to avoid the conflict.  The newly added
rename method should do the same, since developers may not have
access to delete the conflicting file.

Test: boots, rename via UI, new unit tests
Bug: 31545404
Change-Id: Ie397eebb0fbf98cf079eee3bbbb6c6b7ca627d91