Update go dependencies

vendor/google.golang.org/api/gensupport/json.go

@@ -12,13 +12,13 @@ import (
 )
 
 // MarshalJSON returns a JSON encoding of schema containing only selected fields.
-// A field is selected if:
-//   * it has a non-empty value, or
-//     * its field name is present in forceSendFields, and
-//     * it is not a nil pointer or nil interface.
+// A field is selected if any of the following is true:
+//   * it has a non-empty value
+//   * its field name is present in forceSendFields and it is not a nil pointer or nil interface
+//   * its field name is present in nullFields.
 // The JSON key for each selected field is taken from the field's json: struct tag.
-func MarshalJSON(schema interface{}, forceSendFields []string) ([]byte, error) {
-	if len(forceSendFields) == 0 {
+func MarshalJSON(schema interface{}, forceSendFields, nullFields []string) ([]byte, error) {
+	if len(forceSendFields) == 0 && len(nullFields) == 0 {
 		return json.Marshal(schema)
 	}
 
@@ -26,15 +26,19 @@ func MarshalJSON(schema interface{}, forceSendFields []string) ([]byte, error) {
 	for _, f := range forceSendFields {
 		mustInclude[f] = struct{}{}
 	}
+	useNull := make(map[string]struct{})
+	for _, f := range nullFields {
+		useNull[f] = struct{}{}
+	}
 
-	dataMap, err := schemaToMap(schema, mustInclude)
+	dataMap, err := schemaToMap(schema, mustInclude, useNull)
 	if err != nil {
 		return nil, err
 	}
 	return json.Marshal(dataMap)
 }
 
-func schemaToMap(schema interface{}, mustInclude map[string]struct{}) (map[string]interface{}, error) {
+func schemaToMap(schema interface{}, mustInclude, useNull map[string]struct{}) (map[string]interface{}, error) {
 	m := make(map[string]interface{})
 	s := reflect.ValueOf(schema)
 	st := s.Type()
@@ -54,6 +58,14 @@ func schemaToMap(schema interface{}, mustInclude map[string]struct{}) (map[strin
 
 		v := s.Field(i)
 		f := st.Field(i)
+
+		if _, ok := useNull[f.Name]; ok {
+			if !isEmptyValue(v) {
+				return nil, fmt.Errorf("field %q in NullFields has non-empty value", f.Name)
+			}
+			m[tag.apiName] = nil
+			continue
+		}
 		if !includeField(v, f, mustInclude) {
 			continue
 		}

vendor/google.golang.org/api/gensupport/resumable.go

@@ -5,6 +5,7 @@
 package gensupport
 
 import (
+	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -15,10 +16,6 @@ import (
 )
 
 const (
-	// statusResumeIncomplete is the code returned by the Google uploader
-	// when the transfer is not yet complete.
-	statusResumeIncomplete = 308
-
 	// statusTooManyRequests is returned by the storage API if the
 	// per-project limits have been temporarily exceeded. The request
 	// should be retried.
@@ -79,8 +76,23 @@ func (rx *ResumableUpload) doUploadRequest(ctx context.Context, data io.Reader,
 	req.Header.Set("Content-Range", contentRange)
 	req.Header.Set("Content-Type", rx.MediaType)
 	req.Header.Set("User-Agent", rx.UserAgent)
-	return SendRequest(ctx, rx.Client, req)
 
+	// Google's upload endpoint uses status code 308 for a
+	// different purpose than the "308 Permanent Redirect"
+	// since-standardized in RFC 7238. Because of the conflict in
+	// semantics, Google added this new request header which
+	// causes it to not use "308" and instead reply with 200 OK
+	// and sets the upload-specific "X-HTTP-Status-Code-Override:
+	// 308" response header.
+	req.Header.Set("X-GUploader-No-308", "yes")
+
+	return SendRequest(ctx, rx.Client, req)
+}
+
+func statusResumeIncomplete(resp *http.Response) bool {
+	// This is how the server signals "status resume incomplete"
+	// when X-GUploader-No-308 is set to "yes":
+	return resp != nil && resp.Header.Get("X-Http-Status-Code-Override") == "308"
 }
 
 // reportProgress calls a user-supplied callback to report upload progress.
@@ -111,11 +123,17 @@ func (rx *ResumableUpload) transferChunk(ctx context.Context) (*http.Response, e
 		return res, err
 	}
 
-	if res.StatusCode == statusResumeIncomplete || res.StatusCode == http.StatusOK {
+	// We sent "X-GUploader-No-308: yes" (see comment elsewhere in
+	// this file), so we don't expect to get a 308.
+	if res.StatusCode == 308 {
+		return nil, errors.New("unexpected 308 response status code")
+	}
+
+	if res.StatusCode == http.StatusOK {
 		rx.reportProgress(off, off+int64(size))
 	}
 
-	if res.StatusCode == statusResumeIncomplete {
+	if statusResumeIncomplete(res) {
 		rx.Media.Next()
 	}
 	return res, nil
@@ -177,7 +195,7 @@ func (rx *ResumableUpload) Upload(ctx context.Context) (resp *http.Response, err
 
 		// If the chunk was uploaded successfully, but there's still
 		// more to go, upload the next chunk without any delay.
-		if status == statusResumeIncomplete {
+		if statusResumeIncomplete(resp) {
 			pause = 0
 			backoff.Reset()
 			resp.Body.Close()

vendor/google.golang.org/api/gensupport/retry.go

@@ -55,23 +55,17 @@ func DefaultBackoffStrategy() BackoffStrategy {
 // shouldRetry returns true if the HTTP response / error indicates that the
 // request should be attempted again.
 func shouldRetry(status int, err error) bool {
-	// Retry for 5xx response codes.
-	if 500 <= status && status < 600 {
+	if 500 <= status && status <= 599 {
 		return true
 	}
-
-	// Retry on statusTooManyRequests{
 	if status == statusTooManyRequests {
 		return true
 	}
-
-	// Retry on unexpected EOFs and temporary network errors.
 	if err == io.ErrUnexpectedEOF {
 		return true
 	}
 	if err, ok := err.(net.Error); ok {
 		return err.Temporary()
 	}
-
 	return false
 }