Support Bluetooth network connection type on ChromeOS.

chromeos/network/network_change_notifier_chromeos.cc

Index: chromeos/network/network_change_notifier_chromeos.cc
diff --git a/chromeos/network/network_change_notifier_chromeos.cc b/chromeos/network/network_change_notifier_chromeos.cc
index 5c6908a0db32506d05e603eb3347beb6a14f8afd..fdb3cd8f241a038eb4e72ecb450988ada58d2071 100644
--- a/chromeos/network/network_change_notifier_chromeos.cc
+++ b/chromeos/network/network_change_notifier_chromeos.cc
@@ -203,6 +203,8 @@ NetworkChangeNotifierChromeos::ConnectionTypeFromShill(
     return CONNECTION_WIFI;
   else if (type == shill::kTypeWimax)
     return CONNECTION_4G;
+  else if (type == shill::kTypeBluetooth)
+    return CONNECTION_BLUETOOTH;
 
   if (type != shill::kTypeCellular)
     return CONNECTION_UNKNOWN;