Rename SingleLogSource to SingleLogFileLogSource
Since there is now a class SingleDebugDaemonLogSource, the old
name "SingleLogSource" is ambiguous. Rename it to indicate that the
logs come from a log file.
Also refactored the use of SingleLogSource in feedbackPrivate API:
- Use the base interface class SystemLogsSource instead, in
LogSourceAccessManager.
- Convert from feedback_private::LogSource directly to a
SystemLogSource in SingleLogSourceFactory. Conversion of enums is
internal to SingleLogSourceFactory.
BUG=
733846
Review-Url:
https://codereview.chromium.org/2956513004
Cr-Commit-Position: refs/heads/master@{#485283}
Committed:
https://chromium.googlesource.com/chromium/src/+/dea6441d2d8033ee73d5f746c34be09c03ed4758