cq: rename internal deprecator to cqlinter.

Companion CL to https://crrev.com/i/1162021,
where motivation is described. These fields aren't used
in customer configs and so are safe to change.

R=jchinlee

Bug: 912294
Change-Id: I237695e0a216357c1bb1890bf289acd070b2c989
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/1560851
Reviewed-by: Jao-ke Chin-Lee <jchinlee@chromium.org>
Commit-Queue: Jao-ke Chin-Lee <jchinlee@chromium.org>
Auto-Submit: Andrii Shyshkalov <tandrii@chromium.org>
diff --git a/cq/api/config/v2/cq.pb.go b/cq/api/config/v2/cq.pb.go
index 4fb0464..ef05910 100644
--- a/cq/api/config/v2/cq.pb.go
+++ b/cq/api/config/v2/cq.pb.go
@@ -355,8 +355,8 @@
 	// Typically, builds from Buildbucket are executed on LUCI stack, however, CQ
 	// is agnostic to how and where builds are executed.
 	Tryjob *Verifiers_Tryjob `protobuf:"bytes,3,opt,name=tryjob,proto3" json:"tryjob,omitempty"`
-	// Deprecator is for internal CQ use only. DO NOT USE IN YOUR cq.cfg.
-	Deprecator *Verifiers_Deprecator `protobuf:"bytes,4,opt,name=deprecator,proto3" json:"deprecator,omitempty"`
+	// CQLinter is for internal CQ use only. DO NOT USE IN YOUR cq.cfg.
+	Cqlinter *Verifiers_CQLinter `protobuf:"bytes,4,opt,name=cqlinter,proto3" json:"cqlinter,omitempty"`
 	// Fake is for internal CQ use only. DO NOT USE IN YOUR cq.cfg.
 	Fake                 *Verifiers_Fake `protobuf:"bytes,5,opt,name=fake,proto3" json:"fake,omitempty"`
 	XXX_NoUnkeyedLiteral struct{}        `json:"-"`
@@ -410,9 +410,9 @@
 	return nil
 }
 
-func (m *Verifiers) GetDeprecator() *Verifiers_Deprecator {
+func (m *Verifiers) GetCqlinter() *Verifiers_CQLinter {
 	if m != nil {
-		return m.Deprecator
+		return m.Cqlinter
 	}
 	return nil
 }
@@ -807,7 +807,7 @@
 	// whitelisted group.
 	//
 	// If not specified, defaults to 0, meaning this builder is never
-	// triggered by CQ, but an existing build of can be re-used by CQ.
+	// triggered by CQ, but an existing build can be re-used by CQ.
 	//
 	// To illustrate, suppose percentage=10. Then,
 	//   Without owner_whitelist_group,
@@ -948,37 +948,37 @@
 	return 0
 }
 
-// Deprecator is for internal use in CQ.
-type Verifiers_Deprecator struct {
+// CQLinter is for internal use in CQ.
+type Verifiers_CQLinter struct {
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
 }
 
-func (m *Verifiers_Deprecator) Reset()         { *m = Verifiers_Deprecator{} }
-func (m *Verifiers_Deprecator) String() string { return proto.CompactTextString(m) }
-func (*Verifiers_Deprecator) ProtoMessage()    {}
-func (*Verifiers_Deprecator) Descriptor() ([]byte, []int) {
+func (m *Verifiers_CQLinter) Reset()         { *m = Verifiers_CQLinter{} }
+func (m *Verifiers_CQLinter) String() string { return proto.CompactTextString(m) }
+func (*Verifiers_CQLinter) ProtoMessage()    {}
+func (*Verifiers_CQLinter) Descriptor() ([]byte, []int) {
 	return fileDescriptor_59a2f489dbd601ec, []int{3, 3}
 }
 
-func (m *Verifiers_Deprecator) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Verifiers_Deprecator.Unmarshal(m, b)
+func (m *Verifiers_CQLinter) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Verifiers_CQLinter.Unmarshal(m, b)
 }
-func (m *Verifiers_Deprecator) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Verifiers_Deprecator.Marshal(b, m, deterministic)
+func (m *Verifiers_CQLinter) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Verifiers_CQLinter.Marshal(b, m, deterministic)
 }
-func (m *Verifiers_Deprecator) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Verifiers_Deprecator.Merge(m, src)
+func (m *Verifiers_CQLinter) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Verifiers_CQLinter.Merge(m, src)
 }
-func (m *Verifiers_Deprecator) XXX_Size() int {
-	return xxx_messageInfo_Verifiers_Deprecator.Size(m)
+func (m *Verifiers_CQLinter) XXX_Size() int {
+	return xxx_messageInfo_Verifiers_CQLinter.Size(m)
 }
-func (m *Verifiers_Deprecator) XXX_DiscardUnknown() {
-	xxx_messageInfo_Verifiers_Deprecator.DiscardUnknown(m)
+func (m *Verifiers_CQLinter) XXX_DiscardUnknown() {
+	xxx_messageInfo_Verifiers_CQLinter.DiscardUnknown(m)
 }
 
-var xxx_messageInfo_Verifiers_Deprecator proto.InternalMessageInfo
+var xxx_messageInfo_Verifiers_CQLinter proto.InternalMessageInfo
 
 // Fake is for internal use in CQ.
 type Verifiers_Fake struct {
@@ -1049,7 +1049,7 @@
 	proto.RegisterType((*Verifiers_Tryjob_Builder)(nil), "cq.config.Verifiers.Tryjob.Builder")
 	proto.RegisterType((*Verifiers_Tryjob_EquivalentBuilder)(nil), "cq.config.Verifiers.Tryjob.EquivalentBuilder")
 	proto.RegisterType((*Verifiers_Tryjob_RetryConfig)(nil), "cq.config.Verifiers.Tryjob.RetryConfig")
-	proto.RegisterType((*Verifiers_Deprecator)(nil), "cq.config.Verifiers.Deprecator")
+	proto.RegisterType((*Verifiers_CQLinter)(nil), "cq.config.Verifiers.CQLinter")
 	proto.RegisterType((*Verifiers_Fake)(nil), "cq.config.Verifiers.Fake")
 }
 
@@ -1058,70 +1058,70 @@
 }
 
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+	0x1d, 0x99, 0xf4, 0xa0, 0x7e, 0x85, 0x92, 0x0f, 0x39, 0xca, 0xcc, 0x25, 0xb0, 0xb6, 0xa0, 0xfc,
+	0x69, 0x16, 0xa3, 0x73, 0x5a, 0xe7, 0xb7, 0x12, 0x54, 0xed, 0x32, 0xe4, 0x31, 0x3c, 0xc8, 0x65,
+	0xec, 0xee, 0x4c, 0x0f, 0xc9, 0x21, 0xd4, 0x52, 0x29, 0x3e, 0x62, 0xa8, 0xf4, 0x7a, 0x3a, 0x93,
+	0xdd, 0x7b, 0x33, 0xf1, 0x4f, 0x2d, 0x9b, 0x16, 0xb2, 0xce, 0x2b, 0x78, 0xe8, 0x40, 0x42, 0xa0,
+	0x92, 0x04, 0x85, 0x29, 0xcc, 0x98, 0x6c, 0x02, 0x48, 0x1c, 0x32, 0x89, 0x11, 0xde, 0xa4, 0x66,
+	0x8f, 0x3a, 0xad, 0x4b, 0x1c, 0x52, 0x03, 0xec, 0xfc, 0xe1, 0x41, 0xbd, 0x48, 0x9b, 0x9c, 0xc2,
+	0xaa, 0x3d, 0x29, 0x0b, 0x27, 0x2c, 0xe8, 0xf3, 0x98, 0xab, 0xa9, 0x59, 0xcd, 0xeb, 0xbd, 0x58,
+	0x76, 0x4e, 0x97, 0xd5, 0xf1, 0xd9, 0xa1, 0xe5, 0xd2, 0x47, 0x56, 0x7e, 0x3c, 0x71, 0x00, 0xf9,
+	0x1e, 0x3c, 0x25, 0x11, 0x9d, 0x11, 0x5d, 0xcd, 0xfe, 0xbf, 0x74, 0xad, 0x0b, 0x89, 0x68, 0xad,
+	0x49, 0x41, 0x15, 0x63, 0x72, 0x00, 0x55, 0x25, 0xa7, 0x1f, 0x45, 0xdf, 0x59, 0x73, 0xe3, 0x3f,
+	0xc4, 0x9a, 0x42, 0x1d, 0x95, 0x7c, 0x03, 0xb5, 0x70, 0x12, 0xf3, 0x44, 0xa1, 0x6c, 0x57, 0x8c,
+	0x6c, 0x73, 0xa9, 0xec, 0xf8, 0xec, 0xbd, 0x21, 0xd1, 0x82, 0x4e, 0xf6, 0xa1, 0x32, 0x0c, 0x3e,
+	0x61, 0x7b, 0xc5, 0xf9, 0x6b, 0x99, 0xec, 0x6d, 0xf0, 0x09, 0xa9, 0xa1, 0x75, 0x7e, 0x2f, 0xc1,
+	0xa3, 0x3b, 0x55, 0x20, 0xbb, 0xd0, 0x0a, 0xc5, 0x78, 0xcc, 0x95, 0x42, 0xc9, 0x62, 0x9e, 0x59,
+	0x97, 0xd5, 0x69, 0xb3, 0x40, 0xdf, 0xf3, 0x4c, 0x91, 0x7d, 0xdd, 0xd2, 0x53, 0x26, 0xf3, 0x84,
+	0x05, 0x61, 0x88, 0x59, 0x66, 0xb9, 0xf6, 0x8e, 0x1e, 0x0f, 0xe4, 0x94, 0xe6, 0xc9, 0xa1, 0x09,
+	0x18, 0xfa, 0x2b, 0xd8, 0x08, 0xe2, 0x58, 0x5c, 0x33, 0xd7, 0xb1, 0xd7, 0x5c, 0x8d, 0x98, 0x48,
+	0x31, 0x61, 0x03, 0x4c, 0x6d, 0xe3, 0xd6, 0xe8, 0x33, 0x43, 0xb1, 0x5d, 0x75, 0xc9, 0xd5, 0xe8,
+	0x43, 0x8a, 0xc9, 0x09, 0xa6, 0x59, 0x67, 0x0b, 0x60, 0x5e, 0xe0, 0xcf, 0x9d, 0xd8, 0xf9, 0xb3,
+	0x0a, 0x55, 0x5b, 0x44, 0xf2, 0x1a, 0x6a, 0xfd, 0x9c, 0xc7, 0x03, 0x6d, 0x72, 0xdb, 0x1e, 0xcf,
+	0xef, 0xa9, 0xb9, 0x7f, 0x64, 0xb9, 0xb4, 0x10, 0x91, 0x1f, 0xa1, 0x21, 0x51, 0xc9, 0x29, 0xb3,
+	0x12, 0x77, 0xeb, 0x2f, 0xef, 0x5b, 0x84, 0x6a, 0xbe, 0xf5, 0x3b, 0xf5, 0xe4, 0x7c, 0xd2, 0xf9,
+	0xab, 0x0c, 0x0f, 0xdd, 0x0e, 0x4b, 0xfd, 0xfd, 0x1c, 0x9a, 0x03, 0x9e, 0x05, 0xfd, 0x18, 0x99,
+	0xc4, 0x3c, 0x43, 0xb3, 0x59, 0x8d, 0x36, 0x1c, 0x48, 0x35, 0x46, 0xbe, 0x80, 0x86, 0x92, 0x3c,
+	0x8a, 0x50, 0xe2, 0x80, 0xf5, 0xa7, 0xa6, 0x56, 0x75, 0xea, 0x15, 0xd8, 0xd1, 0x94, 0x1c, 0xc0,
+	0x3a, 0xde, 0xa4, 0x28, 0xf9, 0x18, 0x13, 0xc5, 0x52, 0x94, 0x21, 0x26, 0x2a, 0x88, 0xd0, 0xd8,
+	0xa7, 0x4c, 0xd7, 0xe6, 0xc1, 0xd3, 0x22, 0x46, 0x28, 0x34, 0x71, 0x92, 0xf3, 0xab, 0x20, 0xd6,
+	0x22, 0x25, 0x9c, 0x69, 0xf6, 0xef, 0x3b, 0xe9, 0x9b, 0x42, 0x30, 0x2b, 0x5c, 0x63, 0xbe, 0xc6,
+	0x85, 0x20, 0x2f, 0xe1, 0x51, 0x2c, 0x42, 0xf3, 0x84, 0xcd, 0xba, 0xb6, 0x6a, 0x1c, 0xd1, 0x9a,
+	0xc1, 0xb6, 0x75, 0xc9, 0x57, 0xf0, 0xec, 0x0e, 0x91, 0xe1, 0x4d, 0x18, 0xe7, 0x03, 0x6c, 0x3f,
+	0x34, 0x82, 0xf5, 0xdb, 0x82, 0x37, 0x36, 0xd8, 0xf9, 0x05, 0x56, 0x3f, 0xcb, 0x61, 0x69, 0x69,
+	0xb7, 0x00, 0x16, 0xea, 0x50, 0x36, 0x75, 0x58, 0x40, 0x48, 0x0f, 0xd6, 0xc5, 0x75, 0x82, 0x92,
+	0x5d, 0x8f, 0xb8, 0x42, 0xed, 0x5d, 0xfb, 0x09, 0xb8, 0xf2, 0x3e, 0x31, 0xc1, 0xcb, 0x59, 0xcc,
+	0x3c, 0x63, 0x9d, 0xbf, 0x4b, 0xe0, 0x2d, 0xdc, 0xb5, 0xbe, 0x99, 0x8c, 0x27, 0x51, 0x8c, 0x6c,
+	0x92, 0x0b, 0x15, 0xb8, 0x47, 0xdf, 0xb3, 0xd8, 0x99, 0x86, 0x34, 0x25, 0x8a, 0x45, 0x3f, 0x88,
+	0x1d, 0xa5, 0x6c, 0x29, 0x16, 0xb3, 0x94, 0x5d, 0x68, 0x0d, 0x03, 0x1e, 0xe7, 0x12, 0xd9, 0x35,
+	0xf2, 0x68, 0xa4, 0x4c, 0x0a, 0x2b, 0xb4, 0xe9, 0xd0, 0x4b, 0x03, 0x92, 0xaf, 0xa1, 0xad, 0x64,
+	0x90, 0x64, 0x5c, 0xdf, 0xd6, 0x1d, 0x41, 0xc5, 0x08, 0x9e, 0x16, 0xf1, 0xb7, 0xb7, 0x94, 0xbb,
+	0xd0, 0xd2, 0xdf, 0xad, 0xc8, 0xd5, 0x8c, 0xbf, 0x62, 0x37, 0x70, 0xa8, 0xa5, 0x75, 0x00, 0x6a,
+	0xb3, 0x17, 0xa5, 0x73, 0x09, 0x15, 0xfd, 0x4c, 0x2c, 0xad, 0xec, 0x2e, 0xb4, 0xf0, 0x0a, 0x13,
+	0x95, 0x07, 0xb1, 0x79, 0x19, 0xd1, 0x7d, 0xce, 0xcd, 0x19, 0xaa, 0xdb, 0x14, 0xc9, 0x1a, 0xac,
+	0xd8, 0xbf, 0xce, 0x9e, 0xc6, 0x4e, 0x8e, 0x6a, 0x3f, 0x57, 0xad, 0xb7, 0xfa, 0x55, 0xf3, 0xe9,
+	0x1d, 0xfc, 0x1b, 0x00, 0x00, 0xff, 0xff, 0x79, 0x62, 0xac, 0xf0, 0x82, 0x08, 0x00, 0x00,
 }
diff --git a/cq/api/config/v2/cq.proto b/cq/api/config/v2/cq.proto
index a963ff8..91d79de 100644
--- a/cq/api/config/v2/cq.proto
+++ b/cq/api/config/v2/cq.proto
@@ -142,8 +142,8 @@
   // is agnostic to how and where builds are executed.
   Tryjob tryjob = 3;
 
-  // Deprecator is for internal CQ use only. DO NOT USE IN YOUR cq.cfg.
-  Deprecator deprecator = 4;
+  // CQLinter is for internal CQ use only. DO NOT USE IN YOUR cq.cfg.
+  CQLinter cqlinter = 4;
 
   // Fake is for internal CQ use only. DO NOT USE IN YOUR cq.cfg.
   Fake fake = 5;
@@ -372,8 +372,8 @@
     }
   }
 
-  // Deprecator is for internal use in CQ.
-  message Deprecator{}
+  // CQLinter is for internal use in CQ.
+  message CQLinter{}
 
   // Fake is for internal use in CQ.
   message Fake {
diff --git a/cq/appengine/config/config.go b/cq/appengine/config/config.go
index 047fb5f..8e42f5f 100644
--- a/cq/appengine/config/config.go
+++ b/cq/appengine/config/config.go
@@ -283,8 +283,8 @@
 }
 
 func validateVerifiers(ctx *validation.Context, v *v2.Verifiers) {
-	if v.Deprecator != nil {
-		ctx.Errorf("deprecator verifier is not allowed (internal use only)")
+	if v.Cqlinter != nil {
+		ctx.Errorf("cqlinter verifier is not allowed (internal use only)")
 	}
 	if v.Fake != nil {
 		ctx.Errorf("fake verifier is not allowed (internal use only)")
diff --git a/cq/appengine/config/config_test.go b/cq/appengine/config/config_test.go
index 517ac6d..9dfb84e 100644
--- a/cq/appengine/config/config_test.go
+++ b/cq/appengine/config/config_test.go
@@ -305,9 +305,9 @@
 				So(vctx.Finalize(), ShouldErrLike, "fake verifier is not allowed")
 			})
 			Convey("deprecator not allowed", func() {
-				v.Deprecator = &v2.Verifiers_Deprecator{}
+				v.Cqlinter = &v2.Verifiers_CQLinter{}
 				validateProjectConfig(vctx, &cfg)
-				So(vctx.Finalize(), ShouldErrLike, "deprecator verifier is not allowed")
+				So(vctx.Finalize(), ShouldErrLike, "cqlinter verifier is not allowed")
 			})
 			Convey("tree_status", func() {
 				v.TreeStatus = &v2.Verifiers_TreeStatus{}