logging: add convenience APIs for literal messages
Literal messages are reasonably common, so we should make
them easy to log. Add APIs for that purpose, and migrate
WifiDiagnostics to use them.
Note that, functionally speaking, the LogcatLog implementations
of these APIs behave the same their corresponding legacy APIs.
However, we add these APIs for two reasons:
- To track which log messages have been audited, to determine
whether or not they contain parameters.
- So that the WifiLog implementation for the new backend can
inform the backend that these messages are clean (free of
any sensitive data).
Finally, we note that these convenience APIs may also provide
a performance benefit. (Because the message is parameter-less,
there's no need to create a LogMessage.)
While there: change the level of some WifiDiagnostics log
messages, to fit our new logging guidelines.
BUG=30737889
TEST=wifitests/runtests.sh
Change-Id: I3d39c1932800af6a818c59b6497c868f8399f8fa
5 files changed