shill: Obtain GSM and CDMA identifiers when registering the modem.

BUG=chromium-os:19803
TEST=unit tests, tested on device

Change-Id: Ie6a0c4645504525ae299d0882a51649272afbdc9
Reviewed-on: http://gerrit.chromium.org/gerrit/6917
Tested-by: Darin Petkov <petkov@chromium.org>
Reviewed-by: Eric Shienbrood <ers@chromium.org>
diff --git a/modem_cdma_proxy_interface.h b/modem_cdma_proxy_interface.h
index 249b7c4..a3d0063 100644
--- a/modem_cdma_proxy_interface.h
+++ b/modem_cdma_proxy_interface.h
@@ -23,6 +23,9 @@
   virtual void GetRegistrationState(uint32 *cdma_1x_state,
                                     uint32 *evdo_state) = 0;
   virtual uint32 GetSignalQuality() = 0;
+
+  // Properties.
+  virtual const std::string MEID() = 0;
 };
 
 // ModemManager.Modem.CDMA signal listener to be associated with the proxy.