2c89a4c170
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