feat(storage): support IncludeFoldersAsPrefixes for gRPC (#10767)

Adds support for IncludeFoldersAsPrefixes to object listing for gRPC protocol, which allows managed folders to be included in the results.

For http protocol it was added in #9211.

storage/grpc_client.go

@@ -432,16 +432,12 @@ func (c *grpcStorageClient) ListObjects(ctx context.Context, bucket string, q *Q
 		MatchGlob:                it.query.MatchGlob,
 		ReadMask:                 q.toFieldMask(), // a nil Query still results in a "*" FieldMask
 		SoftDeleted:              it.query.SoftDeleted,
+		IncludeFoldersAsPrefixes: it.query.IncludeFoldersAsPrefixes,
 	}
 	if s.userProject != "" {
 		ctx = setUserProjectMetadata(ctx, s.userProject)
 	}
 	fetch := func(pageSize int, pageToken string) (token string, err error) {
-		// IncludeFoldersAsPrefixes is not supported for gRPC
-		// TODO: remove this when support is added in the proto.
-		if it.query.IncludeFoldersAsPrefixes {
-			return "", status.Errorf(codes.Unimplemented, "storage: IncludeFoldersAsPrefixes is not supported in gRPC")
-		}
 		var objects []*storagepb.Object
 		var gitr *gapic.ObjectIterator
 		err = run(it.ctx, func(ctx context.Context) error {

storage/integration_test.go

@@ -1492,8 +1492,7 @@ func TestIntegration_ObjectIterationMatchGlob(t *testing.T) {
 }
 
 func TestIntegration_ObjectIterationManagedFolder(t *testing.T) {
-	ctx := skipGRPC("not yet implemented in gRPC")
-	multiTransportTest(skipJSONReads(ctx, "no reads in test"), t, func(t *testing.T, ctx context.Context, _ string, prefix string, client *Client) {
+	multiTransportTest(skipJSONReads(context.Background(), "no reads in test"), t, func(t *testing.T, ctx context.Context, _ string, prefix string, client *Client) {
 		newBucketName := prefix + uidSpace.New()
 		h := testHelper{t}
 		bkt := client.Bucket(newBucketName).Retryer(WithPolicy(RetryAlways))

storage/storage.go

@@ -1695,7 +1695,6 @@ type Query struct {
 
 	// IncludeFoldersAsPrefixes includes Folders and Managed Folders in the set of
 	// prefixes returned by the query. Only applicable if Delimiter is set to /.
-	// IncludeFoldersAsPrefixes is not yet implemented in the gRPC API.
 	IncludeFoldersAsPrefixes bool
 
 	// SoftDeleted indicates whether to list soft-deleted objects.