fix windows build

include/grpc/grpc_posix.h

@@ -49,8 +49,6 @@ extern "C" {
  * functionality on top of GRPC Core.
  */
 
-#ifdef GPR_SUPPORT_CHANNELS_FROM_FD
-
 /** Create a client channel to 'target' using file descriptor 'fd'. The 'target'
     argument will be used to indicate the name for this channel. See the comment
     for grpc_insecure_channel_create for description of 'args' argument. */
@@ -65,8 +63,6 @@ GRPCAPI void grpc_server_add_insecure_channel_from_fd(grpc_server *server,
                                                       grpc_completion_queue *cq,
                                                       int fd);
 
-#endif  // GPR_SUPPORT_CHANNELS_FROM_FD
-
 #ifdef __cplusplus
 }
 #endif

src/core/ext/transport/chttp2/server/insecure/server_chttp2_posix.c

@@ -31,12 +31,12 @@
  *
  */
 
+#include <grpc/grpc.h>
+#include <grpc/grpc_posix.h>
 #include <grpc/support/port_platform.h>
 
 #ifdef GPR_SUPPORT_CHANNELS_FROM_FD
 
-#include <grpc/grpc.h>
-#include <grpc/grpc_posix.h>
 #include <grpc/support/string_util.h>
 
 #include "src/core/ext/transport/chttp2/transport/chttp2_transport.h"