add more missing headers

Makefile

@@ -3064,6 +3064,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/impl/internal_stub.h \
     include/grpc++/impl/rpc_method.h \
     include/grpc++/impl/rpc_service_method.h \
+    include/grpc++/impl/service_type.h \
     include/grpc++/server.h \
     include/grpc++/server_builder.h \
     include/grpc++/server_context.h \
@@ -3071,6 +3072,7 @@ PUBLIC_HEADERS_CXX += \
     include/grpc++/status.h \
     include/grpc++/status_code_enum.h \
     include/grpc++/stream.h \
+    include/grpc++/thread_pool_interface.h \
 
 LIBGRPC++_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(LIBGRPC++_SRC))))
 

build.json

@@ -411,13 +411,15 @@
         "include/grpc++/impl/internal_stub.h",
         "include/grpc++/impl/rpc_method.h",
         "include/grpc++/impl/rpc_service_method.h",
+        "include/grpc++/impl/service_type.h",
         "include/grpc++/server.h",
         "include/grpc++/server_builder.h",
         "include/grpc++/server_context.h",
         "include/grpc++/server_credentials.h",
         "include/grpc++/status.h",
         "include/grpc++/status_code_enum.h",
-        "include/grpc++/stream.h"
+        "include/grpc++/stream.h",
+        "include/grpc++/thread_pool_interface.h"
       ],
       "headers": [
         "src/cpp/client/channel.h",