Committing vendored dependencies and generated protos

Change-Id: I349c149b513d9de7d9f60bde2c954a939da2fc54
diff --git a/vendor/github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway/main.go b/vendor/github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway/main.go
new file mode 100644
index 0000000..291ba7d
--- /dev/null
+++ b/vendor/github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway/main.go
@@ -0,0 +1,141 @@
+// Command protoc-gen-grpc-gateway is a plugin for Google protocol buffer
+// compiler to generate a reverse-proxy, which converts incoming RESTful
+// HTTP/1 requests gRPC invocation.
+// You rarely need to run this program directly. Instead, put this program
+// into your $PATH with a name "protoc-gen-grpc-gateway" and run
+//   protoc --grpc-gateway_out=output_directory path/to/input.proto
+//
+// See README.md for more details.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/golang/glog"
+	"github.com/golang/protobuf/proto"
+	plugin "github.com/golang/protobuf/protoc-gen-go/plugin"
+	"github.com/grpc-ecosystem/grpc-gateway/codegenerator"
+	"github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway/descriptor"
+	"github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway/gengateway"
+)
+
+var (
+	importPrefix               = flag.String("import_prefix", "", "prefix to be added to go package paths for imported proto files")
+	importPath                 = flag.String("import_path", "", "used as the package if no input files declare go_package. If it contains slashes, everything up to the rightmost slash is ignored.")
+	registerFuncSuffix         = flag.String("register_func_suffix", "Handler", "used to construct names of generated Register*<Suffix> methods.")
+	useRequestContext          = flag.Bool("request_context", true, "determine whether to use http.Request's context or not")
+	allowDeleteBody            = flag.Bool("allow_delete_body", false, "unless set, HTTP DELETE methods may not have a body")
+	grpcAPIConfiguration       = flag.String("grpc_api_configuration", "", "path to gRPC API Configuration in YAML format")
+	pathType                   = flag.String("paths", "", "specifies how the paths of generated files are structured")
+	allowRepeatedFieldsInBody  = flag.Bool("allow_repeated_fields_in_body", false, "allows to use repeated field in `body` and `response_body` field of `google.api.http` annotation option")
+	repeatedPathParamSeparator = flag.String("repeated_path_param_separator", "csv", "configures how repeated fields should be split. Allowed values are `csv`, `pipes`, `ssv` and `tsv`.")
+	allowPatchFeature          = flag.Bool("allow_patch_feature", true, "determines whether to use PATCH feature involving update masks (using google.protobuf.FieldMask).")
+	allowColonFinalSegments    = flag.Bool("allow_colon_final_segments", false, "determines whether colons are permitted in the final segment of a path")
+	versionFlag                = flag.Bool("version", false, "print the current verison")
+)
+
+// Variables set by goreleaser at build time
+var (
+	version = "dev"
+	commit  = "unknown"
+	date    = "unknown"
+)
+
+func main() {
+	flag.Parse()
+	defer glog.Flush()
+
+	if *versionFlag {
+		fmt.Printf("Version %v, commit %v, built at %v\n", version, commit, date)
+		os.Exit(0)
+	}
+
+	reg := descriptor.NewRegistry()
+
+	glog.V(1).Info("Parsing code generator request")
+	req, err := codegenerator.ParseRequest(os.Stdin)
+	if err != nil {
+		glog.Fatal(err)
+	}
+	glog.V(1).Info("Parsed code generator request")
+	if req.Parameter != nil {
+		for _, p := range strings.Split(req.GetParameter(), ",") {
+			spec := strings.SplitN(p, "=", 2)
+			if len(spec) == 1 {
+				if err := flag.CommandLine.Set(spec[0], ""); err != nil {
+					glog.Fatalf("Cannot set flag %s", p)
+				}
+				continue
+			}
+			name, value := spec[0], spec[1]
+			if strings.HasPrefix(name, "M") {
+				reg.AddPkgMap(name[1:], value)
+				continue
+			}
+			if err := flag.CommandLine.Set(name, value); err != nil {
+				glog.Fatalf("Cannot set flag %s", p)
+			}
+		}
+	}
+
+	g := gengateway.New(reg, *useRequestContext, *registerFuncSuffix, *pathType, *allowPatchFeature)
+
+	if *grpcAPIConfiguration != "" {
+		if err := reg.LoadGrpcAPIServiceFromYAML(*grpcAPIConfiguration); err != nil {
+			emitError(err)
+			return
+		}
+	}
+
+	reg.SetPrefix(*importPrefix)
+	reg.SetImportPath(*importPath)
+	reg.SetAllowDeleteBody(*allowDeleteBody)
+	reg.SetAllowRepeatedFieldsInBody(*allowRepeatedFieldsInBody)
+	reg.SetAllowColonFinalSegments(*allowColonFinalSegments)
+	if err := reg.SetRepeatedPathParamSeparator(*repeatedPathParamSeparator); err != nil {
+		emitError(err)
+		return
+	}
+	if err := reg.Load(req); err != nil {
+		emitError(err)
+		return
+	}
+
+	var targets []*descriptor.File
+	for _, target := range req.FileToGenerate {
+		f, err := reg.LookupFile(target)
+		if err != nil {
+			glog.Fatal(err)
+		}
+		targets = append(targets, f)
+	}
+
+	out, err := g.Generate(targets)
+	glog.V(1).Info("Processed code generator request")
+	if err != nil {
+		emitError(err)
+		return
+	}
+	emitFiles(out)
+}
+
+func emitFiles(out []*plugin.CodeGeneratorResponse_File) {
+	emitResp(&plugin.CodeGeneratorResponse{File: out})
+}
+
+func emitError(err error) {
+	emitResp(&plugin.CodeGeneratorResponse{Error: proto.String(err.Error())})
+}
+
+func emitResp(resp *plugin.CodeGeneratorResponse) {
+	buf, err := proto.Marshal(resp)
+	if err != nil {
+		glog.Fatal(err)
+	}
+	if _, err := os.Stdout.Write(buf); err != nil {
+		glog.Fatal(err)
+	}
+}