Optionalize client_config system

build.yaml

@@ -255,20 +255,6 @@ filegroups:
   - include/grpc/grpc.h
   - include/grpc/status.h
   headers:
-  - src/core/ext/client_config/client_channel.h
-  - src/core/ext/client_config/client_config.h
-  - src/core/ext/client_config/connector.h
-  - src/core/ext/client_config/initial_connect_string.h
-  - src/core/ext/client_config/lb_policy.h
-  - src/core/ext/client_config/lb_policy_factory.h
-  - src/core/ext/client_config/lb_policy_registry.h
-  - src/core/ext/client_config/resolver.h
-  - src/core/ext/client_config/resolver_factory.h
-  - src/core/ext/client_config/resolver_registry.h
-  - src/core/ext/client_config/subchannel.h
-  - src/core/ext/client_config/subchannel_factory.h
-  - src/core/ext/client_config/subchannel_index.h
-  - src/core/ext/client_config/uri_parser.h
   - src/core/lib/channel/channel_args.h
   - src/core/lib/channel/channel_stack.h
   - src/core/lib/channel/channel_stack_builder.h
@@ -345,22 +331,6 @@ filegroups:
   - src/core/lib/transport/transport.h
   - src/core/lib/transport/transport_impl.h
   src:
-  - src/core/ext/client_config/channel_connectivity.c
-  - src/core/ext/client_config/client_channel.c
-  - src/core/ext/client_config/client_config.c
-  - src/core/ext/client_config/connector.c
-  - src/core/ext/client_config/default_initial_connect_string.c
-  - src/core/ext/client_config/initial_connect_string.c
-  - src/core/ext/client_config/lb_policy.c
-  - src/core/ext/client_config/lb_policy_factory.c
-  - src/core/ext/client_config/lb_policy_registry.c
-  - src/core/ext/client_config/resolver.c
-  - src/core/ext/client_config/resolver_factory.c
-  - src/core/ext/client_config/resolver_registry.c
-  - src/core/ext/client_config/subchannel.c
-  - src/core/ext/client_config/subchannel_factory.c
-  - src/core/ext/client_config/subchannel_index.c
-  - src/core/ext/client_config/uri_parser.c
   - src/core/lib/channel/channel_args.c
   - src/core/lib/channel/channel_stack.c
   - src/core/lib/channel/channel_stack_builder.c
@@ -447,6 +417,39 @@ filegroups:
   - src/core/lib/transport/static_metadata.c
   - src/core/lib/transport/transport.c
   - src/core/lib/transport/transport_op_string.c
+- name: grpc_client_config
+  headers:
+  - src/core/ext/client_config/client_channel.h
+  - src/core/ext/client_config/client_config.h
+  - src/core/ext/client_config/connector.h
+  - src/core/ext/client_config/initial_connect_string.h
+  - src/core/ext/client_config/lb_policy.h
+  - src/core/ext/client_config/lb_policy_factory.h
+  - src/core/ext/client_config/lb_policy_registry.h
+  - src/core/ext/client_config/resolver.h
+  - src/core/ext/client_config/resolver_factory.h
+  - src/core/ext/client_config/resolver_registry.h
+  - src/core/ext/client_config/subchannel.h
+  - src/core/ext/client_config/subchannel_factory.h
+  - src/core/ext/client_config/subchannel_index.h
+  - src/core/ext/client_config/uri_parser.h
+  src:
+  - src/core/ext/client_config/channel_connectivity.c
+  - src/core/ext/client_config/client_channel.c
+  - src/core/ext/client_config/client_config.c
+  - src/core/ext/client_config/connector.c
+  - src/core/ext/client_config/default_initial_connect_string.c
+  - src/core/ext/client_config/initial_connect_string.c
+  - src/core/ext/client_config/lb_policy.c
+  - src/core/ext/client_config/lb_policy_factory.c
+  - src/core/ext/client_config/lb_policy_registry.c
+  - src/core/ext/client_config/resolver.c
+  - src/core/ext/client_config/resolver_factory.c
+  - src/core/ext/client_config/resolver_registry.c
+  - src/core/ext/client_config/subchannel.c
+  - src/core/ext/client_config/subchannel_factory.c
+  - src/core/ext/client_config/subchannel_index.c
+  - src/core/ext/client_config/uri_parser.c
 - name: grpc_codegen
   public_headers:
   - include/grpc/impl/codegen/byte_buffer.h
@@ -464,30 +467,35 @@ filegroups:
   - src/core/ext/lb_policy/grpclb/proto/grpc/lb/v0/load_balancer.pb.c
   uses:
   - grpc_base
+  - grpc_client_config
 - name: grpc_lb_policy_pick_first
   src:
   - src/core/ext/lb_policy/pick_first/pick_first.c
   plugin: grpc_lb_policy_pick_first
   uses:
   - grpc_base
+  - grpc_client_config
 - name: grpc_lb_policy_round_robin
   src:
   - src/core/ext/lb_policy/round_robin/round_robin.c
   plugin: grpc_lb_policy_round_robin
   uses:
   - grpc_base
+  - grpc_client_config
 - name: grpc_resolver_dns_native
   src:
   - src/core/ext/resolver/dns/native/dns_resolver.c
   plugin: grpc_resolver_dns_native
   uses:
   - grpc_base
+  - grpc_client_config
 - name: grpc_resolver_sockaddr
   src:
   - src/core/ext/resolver/sockaddr/sockaddr_resolver.c
   plugin: grpc_resolver_sockaddr
   uses:
   - grpc_base
+  - grpc_client_config
 - name: grpc_secure
   headers:
   - src/core/lib/security/auth_filters.h