shill: Obtain the payment and usage URLs from ModemManager.

BUG=chromium-os:19240
TEST=unit tests, tested on device

Change-Id: I98d800cd69684bdf9c201348c00ff79152e51e45
Reviewed-on: http://gerrit.chromium.org/gerrit/6106
Tested-by: Darin Petkov <petkov@chromium.org>
Reviewed-by: Chris Masone <cmasone@chromium.org>
Reviewed-by: Jason Glasgow <jglasgow@chromium.org>
diff --git a/modem_cdma_proxy.cc b/modem_cdma_proxy.cc
index 4380c2d..4628fb8 100644
--- a/modem_cdma_proxy.cc
+++ b/modem_cdma_proxy.cc
@@ -40,9 +40,10 @@
     const uint32 &activation_state,
     const uint32 &activation_error,
     const DBusPropertiesMap &status_changes) {
-  VLOG(2) << __func__;
-  // TODO(petkov): Implement this.
-  NOTIMPLEMENTED();
+  VLOG(2) << __func__ << "(" << activation_state << ", " << activation_error
+          << ")";
+  listener_->OnCDMAActivationStateChanged(
+      activation_state, activation_error, status_changes);
 }
 
 void ModemCDMAProxy::Proxy::SignalQuality(const uint32 &quality) {