100644 blob b2c8a21b63567f3dcd452f1e97125469991dd892	tray_rotation_lock.cc
100644 blob 03df3682edef2791da51344b00ca522687b8c201	tray_rotation_lock.h
100644 blob a48b59e5b51ddb17e04acfe562f1874b82c7d948	tray_rotation_lock_unittest.cc