Move the proto to third_party

BUILD

@@ -2834,16 +2834,16 @@ grpc_cc_library(
 # Once upb code-gen issue is resolved, replace meshca_upb with this.
 # meshca_upb_proto_library(
 #     name = "meshca_upb",
-#     deps = ["//src/proto/grpc/tls/provider/meshca:meshca_proto"],
+#     deps = ["//third_party/istio/security/proto/providers/google:meshca_proto"],
 # )
 
 grpc_cc_library(
     name = "meshca_upb",
     srcs = [
-        "src/core/ext/upb-generated/src/proto/grpc/tls/provider/meshca/meshca.upb.c",
+        "src/core/ext/upb-generated/third_party/istio/security/proto/providers/google/meshca.upb.c",
     ],
     hdrs = [
-        "src/core/ext/upb-generated/src/proto/grpc/tls/provider/meshca/meshca.upb.h",
+        "src/core/ext/upb-generated/third_party/istio/security/proto/providers/google/meshca.upb.h",
     ],
     language = "c++",
     deps = [

src/core/ext/upb-generated/third_party/istio/security/proto/providers/google/meshca.upb.c

@@ -1,14 +1,14 @@
 /* This file was generated by upbc (the upb compiler) from the input
  * file:
  *
- *     src/proto/grpc/tls/provider/meshca/meshca.proto
+ *     third_party/istio/security/proto/providers/google/meshca.proto
  *
  * Do not edit -- your changes will be discarded when the file is
  * regenerated. */
 
 #include <stddef.h>
 #include "upb/msg.h"
-#include "src/proto/grpc/tls/provider/meshca/meshca.upb.h"
+#include "third_party/istio/security/proto/providers/google/meshca.upb.h"
 #include "google/protobuf/duration.upb.h"
 
 #include "upb/port_def.inc"

src/core/ext/upb-generated/third_party/istio/security/proto/providers/google/meshca.upb.h

@@ -1,13 +1,13 @@
 /* This file was generated by upbc (the upb compiler) from the input
  * file:
  *
- *     src/proto/grpc/tls/provider/meshca/meshca.proto
+ *     third_party/istio/security/proto/providers/google/meshca.proto
  *
  * Do not edit -- your changes will be discarded when the file is
  * regenerated. */
 
-#ifndef SRC_PROTO_GRPC_TLS_PROVIDER_MESHCA_MESHCA_PROTO_UPB_H_
-#define SRC_PROTO_GRPC_TLS_PROVIDER_MESHCA_MESHCA_PROTO_UPB_H_
+#ifndef THIRD_PARTY_ISTIO_SECURITY_PROTO_PROVIDERS_GOOGLE_MESHCA_PROTO_UPB_H_
+#define THIRD_PARTY_ISTIO_SECURITY_PROTO_PROVIDERS_GOOGLE_MESHCA_PROTO_UPB_H_
 
 #include "upb/msg.h"
 #include "upb/decode.h"
@@ -100,4 +100,4 @@ UPB_INLINE bool google_security_meshca_v1_MeshCertificateResponse_add_cert_chain
 
 #include "upb/port_undef.inc"
 
-#endif  /* SRC_PROTO_GRPC_TLS_PROVIDER_MESHCA_MESHCA_PROTO_UPB_H_ */
+#endif  /* THIRD_PARTY_ISTIO_SECURITY_PROTO_PROVIDERS_GOOGLE_MESHCA_PROTO_UPB_H_ */

third_party/istio/security/proto/providers/google/meshca.proto

@@ -49,4 +49,3 @@ service MeshCertificateService {
     returns (MeshCertificateResponse) {
   }
 }
-

tools/codegen/core/gen_upb_api.sh

@@ -106,7 +106,7 @@ proto_files=( \
   "src/proto/grpc/gcp/transport_security_common.proto" \
   "src/proto/grpc/health/v1/health.proto" \
   "src/proto/grpc/lb/v1/load_balancer.proto" \
-  "src/proto/grpc/tls/provider/meshca/meshca.proto" \
+  "third_party/istio/security/proto/providers/google/meshca.proto" \
   "udpa/data/orca/v1/orca_load_report.proto" \
   "udpa/annotations/migrate.proto" \
   "udpa/annotations/sensitive.proto" \

tools/distrib/check_copyright.py

@@ -88,8 +88,6 @@ _EXEMPT = frozenset((
     'tools/grpcz/census.proto',
     # status.proto copied from googleapis
     'src/proto/grpc/status/status.proto',
-    # meshca.proto copied from istio
-    'src/proto/grpc/tls/provider/meshca/meshca.proto',
     # Gradle wrappers used to build for Android
     'examples/android/helloworld/gradlew.bat',
     'src/android/test/interop/gradlew.bat',