Generate the proto JSON converter for DOM distiller

third_party/dom_distiller_js/BUILD.gn

Index: third_party/dom_distiller_js/BUILD.gn
diff --git a/third_party/dom_distiller_js/BUILD.gn b/third_party/dom_distiller_js/BUILD.gn
index aed9ef3a371bb508f882343d29f1b78e16e64cb5..e9a69f6865e7b52bf476063ffee054e37fa422dc 100644
--- a/third_party/dom_distiller_js/BUILD.gn
+++ b/third_party/dom_distiller_js/BUILD.gn
@@ -4,15 +4,10 @@
 
 import("//third_party/protobuf/proto_library.gni")
 
-config("dependent_config") {
-  include_dirs = [ "//third_party/dom_distiller_js/dist/proto_gen" ]
-}
-
 source_set("proto") {
   public_deps = [
     ":dom_distiller_proto",
   ]
-  public_configs = [ ":dependent_config" ]
 }
 
 proto_library("dom_distiller_proto") {
@@ -21,4 +16,5 @@ proto_library("dom_distiller_proto") {
     "dist/proto/dom_distiller.proto",
   ]
   proto_out_dir = "third_party/dom_distiller_js"
+  json_converter = "protoc_plugins/json_values_converter.py"
 }