Handle interfaces with a ServiceName in the go bindings generator.

mojom/generators/go/translator/types.go

Index: mojom/generators/go/translator/types.go
diff --git a/mojom/generators/go/translator/types.go b/mojom/generators/go/translator/types.go
index c76afe61e14bf928779871e20ccfc8e117042971..2b8390d9bb74d79e2cb644c557c34c44fcd216b8 100644
--- a/mojom/generators/go/translator/types.go
+++ b/mojom/generators/go/translator/types.go
@@ -121,7 +121,18 @@ func (t *translator) translateMapType(mojomType mojom_types.MapType) (goType str
 }
 
 func (t *translator) translateTypeReference(typeRef mojom_types.TypeReference) (goType string) {
-	// TODO(azani): Handle interface requests.
 	// TOOD(azani): Handle imported types.
-	return t.goTypeName(*typeRef.TypeKey)
+	typeKey := *typeRef.TypeKey
+	userDefinedType := t.fileGraph.ResolvedTypes[typeKey]
+	typeName := t.goTypeName(*typeRef.TypeKey)
+
+	if _, ok := userDefinedType.(*mojom_types.UserDefinedTypeInterfaceType); ok {
+		if typeRef.IsInterfaceRequest {
+			return fmt.Sprintf("%s_Proxy", typeName)
+		} else {
+			return fmt.Sprintf("%s_Pointer", typeName)
+		}
+	}
+
+	return typeName
 }