Add support for MAC address randomization

chromeos/network/network_device_handler_impl.cc

Index: chromeos/network/network_device_handler_impl.cc
diff --git a/chromeos/network/network_device_handler_impl.cc b/chromeos/network/network_device_handler_impl.cc
index 59c1ddaf1f6babb92c43f73ff30fa1dd22c099a2..d1b1d05d633d019fcac723fa0767606a5af9c7ad 100644
--- a/chromeos/network/network_device_handler_impl.cc
+++ b/chromeos/network/network_device_handler_impl.cc
@@ -432,6 +432,12 @@ void NetworkDeviceHandlerImpl::SetCellularAllowRoaming(
   ApplyCellularAllowRoamingToShill();
 }
 
+void NetworkDeviceHandlerImpl::SetMACAddressRandomizationEnabled(
+    const bool enabled) {
+  mac_addr_randomization_ = enabled;
+  ApplyMACAddressRandomizationToShill();
+}
+
 void NetworkDeviceHandlerImpl::SetWifiTDLSEnabled(
     const std::string& ip_or_mac_address,
     bool enabled,
@@ -520,11 +526,13 @@ void NetworkDeviceHandlerImpl::RemoveAllWifiWakeOnPacketConnections(
 
 void NetworkDeviceHandlerImpl::DeviceListChanged() {
   ApplyCellularAllowRoamingToShill();
+  ApplyMACAddressRandomizationToShill();
 }
 
 NetworkDeviceHandlerImpl::NetworkDeviceHandlerImpl()
     : network_state_handler_(NULL),
-      cellular_allow_roaming_(false) {}
+      cellular_allow_roaming_(false),
+      mac_addr_randomization_(false) {}
 
 void NetworkDeviceHandlerImpl::Init(
     NetworkStateHandler* network_state_handler) {
@@ -564,6 +572,19 @@ void NetworkDeviceHandlerImpl::ApplyCellularAllowRoamingToShill() {
   }
 }
 
+void NetworkDeviceHandlerImpl::ApplyMACAddressRandomizationToShill() {
+  const DeviceState* device_state =
+      GetWifiDeviceState(network_handler::ErrorCallback());
+  if (!device_state)
+    return;
+
+  SetDevicePropertyInternal(device_state->path(),
+                            shill::kMACAddressRandomizationProperty,
+                            base::FundamentalValue(mac_addr_randomization_),
+                            base::Bind(&base::DoNothing),
+                            network_handler::ErrorCallback());
+}
+
 const DeviceState* NetworkDeviceHandlerImpl::GetWifiDeviceState(
     const network_handler::ErrorCallback& error_callback) {
   const DeviceState* device_state =