Fix transitions for image_download and activation

Change-Id: I713ada52eef9d275c7d7596026e178c7382e8335
diff --git a/vendor/github.com/golang/protobuf/protoc-gen-go/generator/generator.go b/vendor/github.com/golang/protobuf/protoc-gen-go/generator/generator.go
index 6f4a902..12ff35b 100644
--- a/vendor/github.com/golang/protobuf/protoc-gen-go/generator/generator.go
+++ b/vendor/github.com/golang/protobuf/protoc-gen-go/generator/generator.go
@@ -1,39 +1,14 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// Copyright 2010 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.
 
-/*
-	The code generator for the plugin for the Google protocol buffer compiler.
-	It generates Go code from the protocol buffer description files read by the
-	main routine.
-*/
+// Package generator is deprecated.
+//
+// This package is excluded from the Go protocol buffer compatibility guarantee
+// and may be deleted at some point in the future.
+//
+// Deprecated: Use the "google.golang.org/protobuf/compiler/protogen" package
+// instead to write protoc plugins in Go.
 package generator
 
 import (
@@ -64,6 +39,13 @@
 	plugin "github.com/golang/protobuf/protoc-gen-go/plugin"
 )
 
+func init() {
+	fmt.Fprint(os.Stderr,
+		"WARNING: Package \"github.com/golang/protobuf/protoc-gen-go/generator\" is deprecated.\n"+
+			"\tA future release of golang/protobuf will delete this package,\n"+
+			"\twhich has long been excluded from the compatibility promise.\n\n")
+}
+
 // generatedCodeVersion indicates a version of the generated code.
 // It is incremented whenever an incompatibility between the generated code and
 // proto package is introduced; the generated code references
@@ -2246,7 +2228,8 @@
 		if oneof && oFields[*field.OneofIndex] == nil {
 			odp := message.OneofDecl[int(*field.OneofIndex)]
 			base := CamelCase(odp.GetName())
-			fname := allocNames(base)[0]
+			names := allocNames(base, "Get"+base)
+			fname, gname := names[0], names[1]
 
 			// This is the first field of a oneof we haven't seen before.
 			// Generate the union field.
@@ -2264,7 +2247,7 @@
 			of := oneofField{
 				fieldCommon: fieldCommon{
 					goName:     fname,
-					getterName: "Get"+fname,
+					getterName: gname,
 					goType:     dname,
 					tags:       tag,
 					protoName:  odp.GetName(),