This has become useless after refactoring; we instead ensure that the
LOG_ID_SECURITY bit isn't set in log_mask, instead of having this
additional check.
Test: logging unit tests
Change-Id: Id47b288d056ebf2b5bd26be94006f17c24fafd31
In the future, we'll want to be able to write to outputs that are not
necessarily a libsysutils SocketClient, for example host tests of
LogBuffer. Therefore, we add a LogWriter class to be used instead of
SocketClient.
Test: logging unit tests
Change-Id: I4385be65e14e83a635691a7ba79e9bf060e49484