platform: Implement set underlying networks for android

experimental/libbox/platform.go

@@ -17,6 +17,7 @@ type PlatformInterface interface {
 	StartDefaultInterfaceMonitor(listener InterfaceUpdateListener) error
 	CloseDefaultInterfaceMonitor(listener InterfaceUpdateListener) error
 	GetInterfaces() (NetworkInterfaceIterator, error)
+	SetUnderlyingNetworks(networks RawNetworkIterator) error
 	UnderNetworkExtension() bool
 	IncludeAllNetworks() bool
 	ReadWIFIState() *WIFIState
@@ -50,6 +51,8 @@ type NetworkInterface struct {
 	Type      int32
 	DNSServer StringIterator
 	Metered   bool
+
+	RawNetwork RawNetwork
 }
 
 type WIFIState struct {
@@ -66,6 +69,11 @@ type NetworkInterfaceIterator interface {
 	HasNext() bool
 }
 
+type RawNetworkIterator interface {
+	Next() RawNetwork
+	HasNext() bool
+}
+
 type Notification struct {
 	Identifier string
 	TypeName   string