Method OnLogMessage

src/butil/logging.cc:1294–1297

    }

    bool OnLogMessage(int severity, const char* file, int line,
                      const butil::StringPiece& content) override {
        return OnLogMessage(severity, file, line, "", content);
    }

    bool OnLogMessage(int severity, const char* file,
                      int line, const char* func,