Proto: Moved in sdk.proto

Also did some pedantic style updates (standardized to double quote
and added a missing comma).

BUG=chromium:940582, b:128456793
TEST=compiled proto

Change-Id: I5f7114d8aab7498c177c0b16f620947faa1dca45
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/1525029
Tested-by: Alex Klein <saklein@chromium.org>
Reviewed-by: Lann Martin <lannm@chromium.org>
Commit-Queue: Alex Klein <saklein@chromium.org>
diff --git a/go/chromite/api/sdk.pb.go b/go/chromite/api/sdk.pb.go
new file mode 100644
index 0000000..61412e5
--- /dev/null
+++ b/go/chromite/api/sdk.pb.go
@@ -0,0 +1,454 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: chromite/api/sdk.proto
+
+package chromite_api
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	_ "go.chromium.org/chromiumos/infra/proto/go/chromite/api"
+	chromiumos "go.chromium.org/chromiumos/infra/proto/go/chromiumos"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// Contains some common cros_sdk path arguments.
+type ChrootPaths struct {
+	// Override for the cache directory.
+	Cache string `protobuf:"bytes,1,opt,name=cache,proto3" json:"cache,omitempty"`
+	// Set the chrome root.
+	Chrome string `protobuf:"bytes,2,opt,name=chrome,proto3" json:"chrome,omitempty"`
+	// The absolute chroot path.
+	Chroot               string   `protobuf:"bytes,3,opt,name=chroot,proto3" json:"chroot,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *ChrootPaths) Reset()         { *m = ChrootPaths{} }
+func (m *ChrootPaths) String() string { return proto.CompactTextString(m) }
+func (*ChrootPaths) ProtoMessage()    {}
+func (*ChrootPaths) Descriptor() ([]byte, []int) {
+	return fileDescriptor_b3d6bdc7c0e50b1e, []int{0}
+}
+
+func (m *ChrootPaths) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ChrootPaths.Unmarshal(m, b)
+}
+func (m *ChrootPaths) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ChrootPaths.Marshal(b, m, deterministic)
+}
+func (m *ChrootPaths) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ChrootPaths.Merge(m, src)
+}
+func (m *ChrootPaths) XXX_Size() int {
+	return xxx_messageInfo_ChrootPaths.Size(m)
+}
+func (m *ChrootPaths) XXX_DiscardUnknown() {
+	xxx_messageInfo_ChrootPaths.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ChrootPaths proto.InternalMessageInfo
+
+func (m *ChrootPaths) GetCache() string {
+	if m != nil {
+		return m.Cache
+	}
+	return ""
+}
+
+func (m *ChrootPaths) GetChrome() string {
+	if m != nil {
+		return m.Chrome
+	}
+	return ""
+}
+
+func (m *ChrootPaths) GetChroot() string {
+	if m != nil {
+		return m.Chroot
+	}
+	return ""
+}
+
+// The chroot version information.
+type ChrootVersion struct {
+	// The version number.
+	Version              uint32   `protobuf:"varint,1,opt,name=version,proto3" json:"version,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *ChrootVersion) Reset()         { *m = ChrootVersion{} }
+func (m *ChrootVersion) String() string { return proto.CompactTextString(m) }
+func (*ChrootVersion) ProtoMessage()    {}
+func (*ChrootVersion) Descriptor() ([]byte, []int) {
+	return fileDescriptor_b3d6bdc7c0e50b1e, []int{1}
+}
+
+func (m *ChrootVersion) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ChrootVersion.Unmarshal(m, b)
+}
+func (m *ChrootVersion) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ChrootVersion.Marshal(b, m, deterministic)
+}
+func (m *ChrootVersion) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ChrootVersion.Merge(m, src)
+}
+func (m *ChrootVersion) XXX_Size() int {
+	return xxx_messageInfo_ChrootVersion.Size(m)
+}
+func (m *ChrootVersion) XXX_DiscardUnknown() {
+	xxx_messageInfo_ChrootVersion.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ChrootVersion proto.InternalMessageInfo
+
+func (m *ChrootVersion) GetVersion() uint32 {
+	if m != nil {
+		return m.Version
+	}
+	return 0
+}
+
+// Create request message.
+type CreateRequest struct {
+	// The chroot-create flag arguments.
+	Flags *CreateRequest_Flags `protobuf:"bytes,1,opt,name=flags,proto3" json:"flags,omitempty"`
+	// The chroot path arguments.
+	Paths                *ChrootPaths `protobuf:"bytes,2,opt,name=paths,proto3" json:"paths,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}     `json:"-"`
+	XXX_unrecognized     []byte       `json:"-"`
+	XXX_sizecache        int32        `json:"-"`
+}
+
+func (m *CreateRequest) Reset()         { *m = CreateRequest{} }
+func (m *CreateRequest) String() string { return proto.CompactTextString(m) }
+func (*CreateRequest) ProtoMessage()    {}
+func (*CreateRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_b3d6bdc7c0e50b1e, []int{2}
+}
+
+func (m *CreateRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_CreateRequest.Unmarshal(m, b)
+}
+func (m *CreateRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_CreateRequest.Marshal(b, m, deterministic)
+}
+func (m *CreateRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_CreateRequest.Merge(m, src)
+}
+func (m *CreateRequest) XXX_Size() int {
+	return xxx_messageInfo_CreateRequest.Size(m)
+}
+func (m *CreateRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_CreateRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_CreateRequest proto.InternalMessageInfo
+
+func (m *CreateRequest) GetFlags() *CreateRequest_Flags {
+	if m != nil {
+		return m.Flags
+	}
+	return nil
+}
+
+func (m *CreateRequest) GetPaths() *ChrootPaths {
+	if m != nil {
+		return m.Paths
+	}
+	return nil
+}
+
+// Options that affect how the chroot is created.
+type CreateRequest_Flags struct {
+	// Whether or not to replace the chroot if it already exists.
+	NoReplace bool `protobuf:"varint,1,opt,name=no_replace,json=noReplace,proto3" json:"no_replace,omitempty"`
+	// Whether to do a full build of the SDK or use prebuilts.
+	Bootstrap bool `protobuf:"varint,2,opt,name=bootstrap,proto3" json:"bootstrap,omitempty"`
+	// Whether the chroot should be mounted on a loopback image or created
+	// directly inside a directory. Set to true to create in a directory.
+	NoUseImage           bool     `protobuf:"varint,3,opt,name=no_use_image,json=noUseImage,proto3" json:"no_use_image,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *CreateRequest_Flags) Reset()         { *m = CreateRequest_Flags{} }
+func (m *CreateRequest_Flags) String() string { return proto.CompactTextString(m) }
+func (*CreateRequest_Flags) ProtoMessage()    {}
+func (*CreateRequest_Flags) Descriptor() ([]byte, []int) {
+	return fileDescriptor_b3d6bdc7c0e50b1e, []int{2, 0}
+}
+
+func (m *CreateRequest_Flags) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_CreateRequest_Flags.Unmarshal(m, b)
+}
+func (m *CreateRequest_Flags) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_CreateRequest_Flags.Marshal(b, m, deterministic)
+}
+func (m *CreateRequest_Flags) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_CreateRequest_Flags.Merge(m, src)
+}
+func (m *CreateRequest_Flags) XXX_Size() int {
+	return xxx_messageInfo_CreateRequest_Flags.Size(m)
+}
+func (m *CreateRequest_Flags) XXX_DiscardUnknown() {
+	xxx_messageInfo_CreateRequest_Flags.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_CreateRequest_Flags proto.InternalMessageInfo
+
+func (m *CreateRequest_Flags) GetNoReplace() bool {
+	if m != nil {
+		return m.NoReplace
+	}
+	return false
+}
+
+func (m *CreateRequest_Flags) GetBootstrap() bool {
+	if m != nil {
+		return m.Bootstrap
+	}
+	return false
+}
+
+func (m *CreateRequest_Flags) GetNoUseImage() bool {
+	if m != nil {
+		return m.NoUseImage
+	}
+	return false
+}
+
+// Create response message.
+type CreateResponse struct {
+	// The resulting chroot version.
+	Version              *ChrootVersion `protobuf:"bytes,1,opt,name=version,proto3" json:"version,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}       `json:"-"`
+	XXX_unrecognized     []byte         `json:"-"`
+	XXX_sizecache        int32          `json:"-"`
+}
+
+func (m *CreateResponse) Reset()         { *m = CreateResponse{} }
+func (m *CreateResponse) String() string { return proto.CompactTextString(m) }
+func (*CreateResponse) ProtoMessage()    {}
+func (*CreateResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_b3d6bdc7c0e50b1e, []int{3}
+}
+
+func (m *CreateResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_CreateResponse.Unmarshal(m, b)
+}
+func (m *CreateResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_CreateResponse.Marshal(b, m, deterministic)
+}
+func (m *CreateResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_CreateResponse.Merge(m, src)
+}
+func (m *CreateResponse) XXX_Size() int {
+	return xxx_messageInfo_CreateResponse.Size(m)
+}
+func (m *CreateResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_CreateResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_CreateResponse proto.InternalMessageInfo
+
+func (m *CreateResponse) GetVersion() *ChrootVersion {
+	if m != nil {
+		return m.Version
+	}
+	return nil
+}
+
+// Chroot update request message.
+// Example json:
+// {"toolchain_targets": [{"name": "eve"}]}
+type UpdateRequest struct {
+	// The flags.
+	Flags *UpdateRequest_Flags `protobuf:"bytes,1,opt,name=flags,proto3" json:"flags,omitempty"`
+	// The targets whose toolchains should be updated in the chroot.
+	ToolchainTargets     []*chromiumos.BuildTarget `protobuf:"bytes,2,rep,name=toolchain_targets,json=toolchainTargets,proto3" json:"toolchain_targets,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}                  `json:"-"`
+	XXX_unrecognized     []byte                    `json:"-"`
+	XXX_sizecache        int32                     `json:"-"`
+}
+
+func (m *UpdateRequest) Reset()         { *m = UpdateRequest{} }
+func (m *UpdateRequest) String() string { return proto.CompactTextString(m) }
+func (*UpdateRequest) ProtoMessage()    {}
+func (*UpdateRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_b3d6bdc7c0e50b1e, []int{4}
+}
+
+func (m *UpdateRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_UpdateRequest.Unmarshal(m, b)
+}
+func (m *UpdateRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_UpdateRequest.Marshal(b, m, deterministic)
+}
+func (m *UpdateRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_UpdateRequest.Merge(m, src)
+}
+func (m *UpdateRequest) XXX_Size() int {
+	return xxx_messageInfo_UpdateRequest.Size(m)
+}
+func (m *UpdateRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_UpdateRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_UpdateRequest proto.InternalMessageInfo
+
+func (m *UpdateRequest) GetFlags() *UpdateRequest_Flags {
+	if m != nil {
+		return m.Flags
+	}
+	return nil
+}
+
+func (m *UpdateRequest) GetToolchainTargets() []*chromiumos.BuildTarget {
+	if m != nil {
+		return m.ToolchainTargets
+	}
+	return nil
+}
+
+// Update flag arguments.
+type UpdateRequest_Flags struct {
+	// Whether to build from source or use prebuilt packages.
+	BuildSource          bool     `protobuf:"varint,1,opt,name=build_source,json=buildSource,proto3" json:"build_source,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *UpdateRequest_Flags) Reset()         { *m = UpdateRequest_Flags{} }
+func (m *UpdateRequest_Flags) String() string { return proto.CompactTextString(m) }
+func (*UpdateRequest_Flags) ProtoMessage()    {}
+func (*UpdateRequest_Flags) Descriptor() ([]byte, []int) {
+	return fileDescriptor_b3d6bdc7c0e50b1e, []int{4, 0}
+}
+
+func (m *UpdateRequest_Flags) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_UpdateRequest_Flags.Unmarshal(m, b)
+}
+func (m *UpdateRequest_Flags) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_UpdateRequest_Flags.Marshal(b, m, deterministic)
+}
+func (m *UpdateRequest_Flags) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_UpdateRequest_Flags.Merge(m, src)
+}
+func (m *UpdateRequest_Flags) XXX_Size() int {
+	return xxx_messageInfo_UpdateRequest_Flags.Size(m)
+}
+func (m *UpdateRequest_Flags) XXX_DiscardUnknown() {
+	xxx_messageInfo_UpdateRequest_Flags.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_UpdateRequest_Flags proto.InternalMessageInfo
+
+func (m *UpdateRequest_Flags) GetBuildSource() bool {
+	if m != nil {
+		return m.BuildSource
+	}
+	return false
+}
+
+// Chroot update response message.
+type UpdateResponse struct {
+	// The chroot version after update is complete.
+	Version              *ChrootVersion `protobuf:"bytes,1,opt,name=version,proto3" json:"version,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}       `json:"-"`
+	XXX_unrecognized     []byte         `json:"-"`
+	XXX_sizecache        int32          `json:"-"`
+}
+
+func (m *UpdateResponse) Reset()         { *m = UpdateResponse{} }
+func (m *UpdateResponse) String() string { return proto.CompactTextString(m) }
+func (*UpdateResponse) ProtoMessage()    {}
+func (*UpdateResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_b3d6bdc7c0e50b1e, []int{5}
+}
+
+func (m *UpdateResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_UpdateResponse.Unmarshal(m, b)
+}
+func (m *UpdateResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_UpdateResponse.Marshal(b, m, deterministic)
+}
+func (m *UpdateResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_UpdateResponse.Merge(m, src)
+}
+func (m *UpdateResponse) XXX_Size() int {
+	return xxx_messageInfo_UpdateResponse.Size(m)
+}
+func (m *UpdateResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_UpdateResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_UpdateResponse proto.InternalMessageInfo
+
+func (m *UpdateResponse) GetVersion() *ChrootVersion {
+	if m != nil {
+		return m.Version
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterType((*ChrootPaths)(nil), "chromite.api.ChrootPaths")
+	proto.RegisterType((*ChrootVersion)(nil), "chromite.api.ChrootVersion")
+	proto.RegisterType((*CreateRequest)(nil), "chromite.api.CreateRequest")
+	proto.RegisterType((*CreateRequest_Flags)(nil), "chromite.api.CreateRequest.Flags")
+	proto.RegisterType((*CreateResponse)(nil), "chromite.api.CreateResponse")
+	proto.RegisterType((*UpdateRequest)(nil), "chromite.api.UpdateRequest")
+	proto.RegisterType((*UpdateRequest_Flags)(nil), "chromite.api.UpdateRequest.Flags")
+	proto.RegisterType((*UpdateResponse)(nil), "chromite.api.UpdateResponse")
+}
+
+func init() { proto.RegisterFile("chromite/api/sdk.proto", fileDescriptor_b3d6bdc7c0e50b1e) }
+
+var fileDescriptor_b3d6bdc7c0e50b1e = []byte{
+	// 463 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xa4, 0x93, 0xc1, 0x6e, 0xd3, 0x40,
+	0x10, 0x86, 0xe5, 0x44, 0x49, 0x93, 0x71, 0x82, 0xc2, 0x0a, 0xb5, 0xc1, 0x0d, 0x52, 0xeb, 0x53,
+	0xe1, 0xe0, 0x48, 0x46, 0x88, 0x3b, 0x41, 0x20, 0xc4, 0x05, 0x6d, 0x28, 0x57, 0x6b, 0x63, 0x6f,
+	0xe3, 0x55, 0x62, 0xcf, 0xb2, 0xbb, 0xee, 0x4b, 0xf1, 0x06, 0x1c, 0xfb, 0x26, 0x3c, 0x40, 0xdf,
+	0x01, 0x79, 0x37, 0xae, 0x71, 0x54, 0x21, 0x24, 0x6e, 0xde, 0x7f, 0xfe, 0x19, 0xfd, 0xf3, 0x69,
+	0x0c, 0xa7, 0x69, 0xae, 0xb0, 0x10, 0x86, 0x2f, 0x99, 0x14, 0x4b, 0x9d, 0xed, 0x22, 0xa9, 0xd0,
+	0x20, 0x99, 0x34, 0x7a, 0xc4, 0xa4, 0x08, 0x16, 0x1d, 0xd7, 0xa6, 0x12, 0xfb, 0x2c, 0x61, 0x52,
+	0x38, 0x6f, 0x70, 0xe6, 0xaa, 0x55, 0x81, 0x7a, 0x99, 0x62, 0x51, 0x60, 0xe9, 0x0a, 0xe1, 0x1a,
+	0xfc, 0x55, 0xae, 0x10, 0xcd, 0x17, 0x66, 0x72, 0x4d, 0x9e, 0xc1, 0x20, 0x65, 0x69, 0xce, 0xe7,
+	0xde, 0x85, 0x77, 0x35, 0xa6, 0xee, 0x41, 0x4e, 0x61, 0x68, 0xfb, 0xf9, 0xbc, 0x67, 0xe5, 0xc3,
+	0xab, 0xd1, 0xd1, 0xcc, 0xfb, 0xad, 0x8e, 0x26, 0x7c, 0x09, 0x53, 0x37, 0xf4, 0x1b, 0x57, 0x5a,
+	0x60, 0x49, 0xe6, 0x70, 0x72, 0xeb, 0x3e, 0xed, 0xe0, 0x29, 0x6d, 0x9e, 0xe1, 0x2f, 0x0f, 0xa6,
+	0x2b, 0xc5, 0x99, 0xe1, 0x94, 0x7f, 0xaf, 0xb8, 0x36, 0xe4, 0x2d, 0x0c, 0x6e, 0xf6, 0x6c, 0xab,
+	0xad, 0xd3, 0x8f, 0x2f, 0xa3, 0x3f, 0xd7, 0x8c, 0x3a, 0xde, 0xe8, 0x43, 0x6d, 0xa4, 0xce, 0x4f,
+	0x96, 0x30, 0x90, 0xf5, 0x12, 0x36, 0xa4, 0x1f, 0x3f, 0x3f, 0x6a, 0x6c, 0xb7, 0xa4, 0xce, 0x17,
+	0xdc, 0xc0, 0xc0, 0x0e, 0x20, 0x2f, 0x00, 0x4a, 0x4c, 0x14, 0x97, 0x7b, 0x96, 0xba, 0xd5, 0x47,
+	0x74, 0x5c, 0x22, 0x75, 0x02, 0x59, 0xc0, 0x78, 0x83, 0x68, 0xb4, 0x51, 0x4c, 0xda, 0xe1, 0x23,
+	0xda, 0x0a, 0xe4, 0x02, 0x26, 0x25, 0x26, 0x95, 0xe6, 0x89, 0x28, 0xd8, 0x96, 0x5b, 0x14, 0x23,
+	0x0a, 0x25, 0x5e, 0x6b, 0xfe, 0xa9, 0x56, 0xc2, 0x8f, 0xf0, 0xa4, 0x89, 0xad, 0x25, 0x96, 0x9a,
+	0x93, 0x37, 0x5d, 0x1e, 0x7e, 0x7c, 0xfe, 0x58, 0xd8, 0x03, 0xbd, 0x16, 0xd6, 0x4f, 0x0f, 0xa6,
+	0xd7, 0x32, 0xfb, 0x67, 0x58, 0x1d, 0x6f, 0x17, 0xd6, 0x7b, 0x78, 0x6a, 0x10, 0xf7, 0x69, 0xce,
+	0x44, 0x99, 0x18, 0xa6, 0xb6, 0xdc, 0xd4, 0xe0, 0xfa, 0x57, 0x7e, 0x7c, 0x16, 0xb5, 0xc7, 0x12,
+	0xbd, 0xab, 0x0f, 0xe9, 0xab, 0xad, 0xd3, 0xd9, 0x43, 0x87, 0x13, 0x74, 0xf0, 0xaa, 0x21, 0x78,
+	0x09, 0x13, 0x77, 0x72, 0x1a, 0x2b, 0xf5, 0xc0, 0xd0, 0xb7, 0xda, 0xda, 0x4a, 0x35, 0x85, 0x26,
+	0xcf, 0x7f, 0x51, 0x88, 0x7f, 0x78, 0x00, 0xeb, 0x6c, 0xb7, 0xe6, 0xea, 0x56, 0xa4, 0x9c, 0xac,
+	0x60, 0xe8, 0xe8, 0x92, 0xf3, 0xbf, 0x9c, 0x4a, 0xb0, 0x78, 0xbc, 0x78, 0x88, 0xf2, 0x19, 0x86,
+	0x2e, 0xdc, 0xf1, 0x90, 0x0e, 0xc2, 0xe3, 0x21, 0xdd, 0x7d, 0xc2, 0xe1, 0xdd, 0x7d, 0xd0, 0x9b,
+	0x79, 0x81, 0x7f, 0x77, 0x1f, 0x9c, 0x40, 0x5f, 0x67, 0xbb, 0x59, 0x6f, 0x33, 0xb4, 0xff, 0xd9,
+	0xeb, 0xdf, 0x01, 0x00, 0x00, 0xff, 0xff, 0xcd, 0x7e, 0x17, 0xc0, 0xc6, 0x03, 0x00, 0x00,
+}
diff --git a/src/chromite/api/build_api_test.proto b/src/chromite/api/build_api_test.proto
index fec4a12..bf9d74a 100644
--- a/src/chromite/api/build_api_test.proto
+++ b/src/chromite/api/build_api_test.proto
@@ -1,4 +1,4 @@
-syntax = 'proto3';
+syntax = "proto3";
 
 package chromite.api;
 
@@ -30,7 +30,7 @@
   // Method name override.
   rpc RenamedMethod(TestRequestMessage) returns (TestResultMessage) {
     option (method_options) = {
-      implementation_name: 'CorrectName'
+      implementation_name: "CorrectName",
     };
   }
 }
diff --git a/src/chromite/api/depgraph.proto b/src/chromite/api/depgraph.proto
index 9471621..af2bf51 100644
--- a/src/chromite/api/depgraph.proto
+++ b/src/chromite/api/depgraph.proto
@@ -1,4 +1,4 @@
-syntax = 'proto3';
+syntax = "proto3";
 
 package chromite.api;
 
diff --git a/src/chromite/api/sdk.proto b/src/chromite/api/sdk.proto
new file mode 100644
index 0000000..73af195
--- /dev/null
+++ b/src/chromite/api/sdk.proto
@@ -0,0 +1,89 @@
+syntax = "proto3";
+
+package chromite.api;
+
+import "chromite/api/build_api.proto";
+import "chromiumos/common.proto";
+
+
+// Contains some common cros_sdk path arguments.
+message ChrootPaths {
+  // Override for the cache directory.
+  string cache = 1;
+  // Set the chrome root.
+  string chrome = 2;
+  // The absolute chroot path.
+  string chroot = 3;
+}
+
+// The chroot version information.
+message ChrootVersion {
+  // The version number.
+  uint32 version = 1;
+}
+
+// Create request message.
+message CreateRequest {
+  // Options that affect how the chroot is created.
+  message Flags {
+    // Whether or not to replace the chroot if it already exists.
+    bool no_replace = 1;
+    // Whether to do a full build of the SDK or use prebuilts.
+    bool bootstrap = 2;
+    // Whether the chroot should be mounted on a loopback image or created
+    // directly inside a directory. Set to true to create in a directory.
+    bool no_use_image = 3;
+  }
+
+  // The chroot-create flag arguments.
+  Flags flags = 1;
+  // The chroot path arguments.
+  ChrootPaths paths = 2;
+}
+
+// Create response message.
+message CreateResponse {
+  // The resulting chroot version.
+  ChrootVersion version = 1;
+}
+
+// Chroot update request message.
+// Example json:
+// {"toolchain_targets": [{"name": "eve"}]}
+message UpdateRequest {
+  // Update flag arguments.
+  message Flags {
+    // Whether to build from source or use prebuilt packages.
+    bool build_source = 1;
+  }
+
+  // The flags.
+  Flags flags = 1;
+  // The targets whose toolchains should be updated in the chroot.
+  repeated chromiumos.BuildTarget toolchain_targets = 2;
+}
+
+// Chroot update response message.
+message UpdateResponse {
+  // The chroot version after update is complete.
+  ChrootVersion version = 1;
+}
+
+// SDK operations.
+service SdkService {
+  // The service options (see build_api.proto).
+  option (service_options) = {
+    module: "sdk",
+    service_chroot_assert: OUTSIDE,
+  };
+
+  // Create method, supports replacing an existing chroot.
+  rpc Create(CreateRequest) returns (CreateResponse);
+
+  // Update the chroot.
+  rpc Update(UpdateRequest) returns (UpdateResponse) {
+    option (method_options) = {
+      method_chroot_assert: INSIDE,
+    };
+  }
+}
diff --git a/src/chromite/api/test_archive.proto b/src/chromite/api/test_archive.proto
index a2589fc..e87f70a 100644
--- a/src/chromite/api/test_archive.proto
+++ b/src/chromite/api/test_archive.proto
@@ -1,4 +1,4 @@
-syntax = 'proto3';
+syntax = "proto3";
 
 package chromite.api;