shill: Support for GSM network scanning.

This is mostly placeholder code since synchronous calls will cause crashes due
to timeouts.

BUG=chromium-os:19805
TEST=unit tests

Change-Id: I7ad07d6274b19b39d7955ee256c6928c9f1ce5a1
Reviewed-on: http://gerrit.chromium.org/gerrit/7895
Commit-Ready: Darin Petkov <petkov@chromium.org>
Reviewed-by: Darin Petkov <petkov@chromium.org>
Tested-by: Darin Petkov <petkov@chromium.org>
diff --git a/property_store.h b/property_store.h
index 9c82450..2edc333 100644
--- a/property_store.h
+++ b/property_store.h
@@ -91,6 +91,8 @@
   void RegisterConstString(const std::string &name, const std::string *prop);
   void RegisterStringmap(const std::string &name, Stringmap *prop);
   void RegisterConstStringmap(const std::string &name, const Stringmap *prop);
+  void RegisterStringmaps(const std::string &name, Stringmaps *prop);
+  void RegisterConstStringmaps(const std::string &name, const Stringmaps *prop);
   void RegisterStrings(const std::string &name, Strings *prop);
   void RegisterConstStrings(const std::string &name, const Strings *prop);
   void RegisterUint8(const std::string &name, uint8 *prop);