vendor: update all dependencies to latest versions

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

@@ -0,0 +1,20 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package gensupport
+
+import (
+	"net/http"
+	"testing"
+)
+
+func TestSendRequest(t *testing.T) {
+	// Setting Accept-Encoding should give an error immediately.
+	req, _ := http.NewRequest("GET", "url", nil)
+	req.Header.Set("Accept-Encoding", "")
+	_, err := SendRequest(nil, nil, req)
+	if err == nil {
+		t.Error("got nil, want error")
+	}
+}