Add initial sketch to shill repository

shill_logging.h

+#include <glog/logging.h>
+
+#define SHILL_LOG_DAEMON 1
+#define SHILL_LOG_CONFIG 2
+#define SHILL_LOG_EVENT 4
+#define SHILL_LOG_DBUS 8
+#define SHILL_LOG_MANAGER 16
+#define SHILL_LOG_SERVICE 32
+#define SHILL_LOG_DEVICE 64
+#define SHILL_LOG_ALL ~0
+
+#define SHILL_LOG(level, flags) LOG_IF(level, shill::Log::IsEnabled(flags))
+
+#define SHILL_LOG_FILE "/tmp/shill_daemon.log"
+
+namespace shill {
+class Log {
+ public:
+  static void Enable(uint32_t flags) { flags_ |= flags; }
+  static void Disable(uint32_t flags) { flags_ &= ~flags; }
+  static inline bool IsEnabled(uint32_t flags) { return (flags_ & flags) != 0; }
+
+ private:
+  static uint32_t flags_;
+};
+}  // namespace shill