shill: Clean up protected fields

...as per style.  I did omit property_store_unittest.h, which I'll
assign to cmasone instead of closing the issue.

BUG=chromium-os:19573
TEST=Rerun unit tests

Change-Id: I37874b6e71f50e91ca753d1ef4f1e25abf77032d
Reviewed-on: http://gerrit.chromium.org/gerrit/6764
Reviewed-by: Paul Stewart <pstew@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>
Reviewed-by: Darin Petkov <petkov@chromium.org>
diff --git a/cellular_service.h b/cellular_service.h
index 67b6a92..c1636a8 100644
--- a/cellular_service.h
+++ b/cellular_service.h
@@ -63,6 +63,11 @@
  protected:
   virtual std::string CalculateState() { return "idle"; }
 
+ private:
+  static const char kServiceType[];
+
+  virtual std::string GetDeviceRpcId();
+
   // Properties
   std::string activation_state_;
   Cellular::Operator serving_operator_;
@@ -75,11 +80,6 @@
   std::map<std::string, std::string> apn_info_;
   std::map<std::string, std::string> last_good_apn_info_;
 
- private:
-  static const char kServiceType[];
-
-  virtual std::string GetDeviceRpcId();
-
   CellularRefPtr cellular_;
   const std::string type_;