Record Mobile Operator ID in UMA report. This is Android only for now.

chrome/browser/metrics/metrics_network_observer.cc

Index: chrome/browser/metrics/metrics_network_observer.cc
diff --git a/chrome/browser/metrics/metrics_network_observer.cc b/chrome/browser/metrics/metrics_network_observer.cc
index 9717d1d837236d1067bff08a32626a3571acfad3..dd4fcf2042cf58288ea9a946d705b782518af0fc 100644
--- a/chrome/browser/metrics/metrics_network_observer.cc
+++ b/chrome/browser/metrics/metrics_network_observer.cc
@@ -9,6 +9,20 @@
 #include "base/threading/sequenced_worker_pool.h"
 #include "content/public/browser/browser_thread.h"
 
+#if defined(OS_ANDROID)
+#include "content/common/android/device_telephony_info.h"
+#endif
+
+#if defined(OS_ANDROID)
+namespace {
+
+  std::string GetAndroidNetworkOperatorID() {
+    content::DeviceTelephonyInfo device_info;
+    return device_info.GetNetworkOperator();
+  }
+
+}
+#endif
 
 MetricsNetworkObserver::MetricsNetworkObserver()
     : weak_ptr_factory_(this),
@@ -18,6 +32,7 @@ MetricsNetworkObserver::MetricsNetworkObserver()
   net::NetworkChangeNotifier::AddConnectionTypeObserver(this);
   connection_type_ = net::NetworkChangeNotifier::GetConnectionType();
   ProbeWifiPHYLayerProtocol();
+  GetNetworkOperatorID();
 }
 
 MetricsNetworkObserver::~MetricsNetworkObserver() {
@@ -41,6 +56,7 @@ void MetricsNetworkObserver::OnConnectionTypeChanged(
   connection_type_ = type;
 
   ProbeWifiPHYLayerProtocol();
+  GetNetworkOperatorID();
 }
 
 SystemProfileProto::Network::ConnectionType
@@ -104,3 +120,17 @@ void MetricsNetworkObserver::OnWifiPHYLayerProtocolResult(
   wifi_phy_layer_protocol_ = mode;
 }
 
+void MetricsNetworkObserver::GetNetworkOperatorID() {
+#if defined(OS_ANDROID)
+  PostTaskAndReplyWithResult(
+      content::BrowserThread::GetBlockingPool(),
+      FROM_HERE,
+      base::Bind(&GetAndroidNetworkOperatorID),
+      base::Bind(&MetricsNetworkObserver::OnNetworkOperatorID,
+                 weak_ptr_factory_.GetWeakPtr()));
+#endif
+}
+
+void MetricsNetworkObserver::OnNetworkOperatorID(std::string id) {
+  network_operator_id_ = id;
+}