Add Gob support of ApiLevel and applicableLicensesPropertyImpl.

Bug: 358427516
Test: Manual tests.
Change-Id: I23ada602ee6c2e21238271b0b286a42ea8461a14
diff --git a/android/licenses.go b/android/licenses.go
index 55f46ae..3877921 100644
--- a/android/licenses.go
+++ b/android/licenses.go
@@ -22,6 +22,7 @@
 	"sync"
 
 	"github.com/google/blueprint"
+	"github.com/google/blueprint/gobtools"
 )
 
 // Adds cross-cutting licenses dependency to propagate license metadata through the build system.
@@ -67,6 +68,31 @@
 	licensesProperty *[]string
 }
 
+type applicableLicensesPropertyImplGob struct {
+	Name             string
+	LicensesProperty []string
+}
+
+func (a *applicableLicensesPropertyImpl) ToGob() *applicableLicensesPropertyImplGob {
+	return &applicableLicensesPropertyImplGob{
+		Name:             a.name,
+		LicensesProperty: *a.licensesProperty,
+	}
+}
+
+func (a *applicableLicensesPropertyImpl) FromGob(data *applicableLicensesPropertyImplGob) {
+	a.name = data.Name
+	a.licensesProperty = &data.LicensesProperty
+}
+
+func (a applicableLicensesPropertyImpl) GobEncode() ([]byte, error) {
+	return gobtools.CustomGobEncode[applicableLicensesPropertyImplGob](&a)
+}
+
+func (a *applicableLicensesPropertyImpl) GobDecode(data []byte) error {
+	return gobtools.CustomGobDecode[applicableLicensesPropertyImplGob](data, a)
+}
+
 func newApplicableLicensesProperty(name string, licensesProperty *[]string) applicableLicensesProperty {
 	return applicableLicensesPropertyImpl{
 		name:             name,