tree b6bf432f847620cf72e7faaacf51e41d3dbd8809
parent 538d85275a94b09a1a7289ee44c13c7d508d2ec9
author Yifan Hong <elsk@google.com> 1583183005 -0800
committer Yifan Hong <elsk@google.com> 1583426937 -0800

Preserve libbase / liblog logs.

Previously in Android, libchrome's logging::InitLogging is called
with log_file set. update_engine depends on various Android modules
(notabily, libfs_mgr etc.) which uses libbase / liblog logging
functionality. These logs are not written to the file and often
unavailable to bug reports.

Now, in Android, setup libbase logger (which sets liblog
logger). Logs from liblog / libbase / libchrome are all re-directed to
the
custom logger, CombinedLogger, which writes to logd and/or the
persistent log file.

Test: reboot and inspect /data/misc/update_engine_log and logcat.
Bug: 147696014
Bug: 148818798

Change-Id: Ie55017f99515bf7b2443012810a14e1f3465c5d0
Merged-In: Ie55017f99515bf7b2443012810a14e1f3465c5d0