Adds bluetooth connection type to NetworkChangeNotifier.

chrome/browser/metrics/network_metrics_provider.cc

Index: chrome/browser/metrics/network_metrics_provider.cc
diff --git a/chrome/browser/metrics/network_metrics_provider.cc b/chrome/browser/metrics/network_metrics_provider.cc
index 006e1a706acee1cc184b7d0020d4ffe9e49893f5..b339d4b93adcddd000756500e58073e19f3c359a 100644
--- a/chrome/browser/metrics/network_metrics_provider.cc
+++ b/chrome/browser/metrics/network_metrics_provider.cc
@@ -70,6 +70,8 @@ NetworkMetricsProvider::GetConnectionType() const {
       return SystemProfileProto::Network::CONNECTION_3G;
     case net::NetworkChangeNotifier::CONNECTION_4G:
       return SystemProfileProto::Network::CONNECTION_4G;
+    case net::NetworkChangeNotifier::CONNECTION_BLUETOOTH:
+      return SystemProfileProto::Network::CONNECTION_BLUETOOTH;
   }
   NOTREACHED();
   return SystemProfileProto::Network::CONNECTION_UNKNOWN;