Fix codegen script to include port_platform

src/core/lib/transport/static_metadata.cc

@@ -24,6 +24,8 @@
  * an explanation of what's going on.
  */
 
+#include <grpc/impl/codegen/port_platform.h>
+
 #include "src/core/lib/transport/static_metadata.h"
 
 #include "src/core/lib/slice/slice_internal.h"

src/core/lib/transport/static_metadata.h

@@ -27,6 +27,8 @@
 #ifndef GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H
 #define GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H
 
+#include <grpc/impl/codegen/port_platform.h>
+
 #include "src/core/lib/transport/metadata.h"
 
 #define GRPC_STATIC_MDSTR_COUNT 105

tools/codegen/core/gen_static_metadata.py

@@ -367,9 +367,13 @@ an explanation of what's going on.
 print >> H, '#ifndef GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H'
 print >> H, '#define GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H'
 print >> H
+print >> H, '#include <grpc/impl/codegen/port_platform.h>'
+print >> H
 print >> H, '#include "src/core/lib/transport/metadata.h"'
 print >> H
 
+print >> C, '#include <grpc/impl/codegen/port_platform.h>'
+print >> C
 print >> C, '#include "src/core/lib/transport/static_metadata.h"'
 print >> C
 print >> C, '#include "src/core/lib/slice/slice_internal.h"'