shill: Broadcast serving cellular operator property changes.

BUG=chromium-os:25011
TEST=unit tests

Change-Id: I52867ef2a95b8babd418ff64d33435c0b54b6ab8
Reviewed-on: https://gerrit.chromium.org/gerrit/14987
Tested-by: Darin Petkov <petkov@chromium.org>
Reviewed-by: Eric Shienbrood <ers@chromium.org>
Commit-Ready: Darin Petkov <petkov@chromium.org>
diff --git a/cellular_service.h b/cellular_service.h
index eb36427..7f4a2d6 100644
--- a/cellular_service.h
+++ b/cellular_service.h
@@ -50,8 +50,8 @@
   const std::string &usage_url() const { return usage_url_; }
   void set_usage_url(const std::string &url) { usage_url_ = url; }
 
+  void SetServingOperator(const Cellular::Operator &oper);
   const Cellular::Operator &serving_operator() const;
-  void set_serving_operator(const Cellular::Operator &oper);
 
   // Sets network technology to |technology| and broadcasts the property change.
   void SetNetworkTechnology(const std::string &technology);