[shill] Enable dynamic log-level changes

BUG=chromium-os:15515
TEST=install on device, stop flimflam, run shill and use dbus-send to call GetDebugLevel/SetDebugLevel

Change-Id: I449388f26d20524e0883c51569beeae23f7b64d2
Reviewed-on: http://gerrit.chromium.org/gerrit/1488
Tested-by: Chris Masone <cmasone@chromium.org>
Reviewed-by: Paul Stewart <pstew@chromium.org>
diff --git a/manager_dbus_adaptor.h b/manager_dbus_adaptor.h
index 94aa127..1827e70 100644
--- a/manager_dbus_adaptor.h
+++ b/manager_dbus_adaptor.h
@@ -59,11 +59,8 @@
   void RegisterAgent(const ::DBus::Path& , ::DBus::Error &error);
   void UnregisterAgent(const ::DBus::Path& , ::DBus::Error &error);
 
-  std::string GetDebugTags(::DBus::Error &error);
-  void SetDebugTags(const std::string& , ::DBus::Error &error);
-  std::string ListDebugTags(::DBus::Error &error);
-  uint32_t GetDebugMask(::DBus::Error &error);
-  void SetDebugMask(const uint32_t& , ::DBus::Error &error);
+  int32_t GetDebugLevel(::DBus::Error &error);
+  void SetDebugLevel(const int32_t& mask, ::DBus::Error &error);
 
   std::string GetServiceOrder(::DBus::Error &error);
   void SetServiceOrder(const std::string& , ::DBus::Error &error);