adb: use adb's unique_fd instead of android::base.

Replace all usages of android::base::unique_fd with the unique_fd from
adb_unique_fd.h, which calls adb_close instead of close on Windows.

Most of these changes are no-ops, except for the ones to
create_service_thread, which was probably pretty broken on Windows.

Test: python test_device.py
Test: adb_test
Test: wine adb_test.exe
Change-Id: Ia4d03f9e2e7ddc88c97dc64172d721f93f3bf853