Add more size_t -> int warning fixes for the win x64 GN build.

[email protected]
BUG=354261

Review URL: https://codereview.chromium.org/941863002

Cr-Commit-Position: refs/heads/master@{#317439}
diff --git a/build/json_schema_api.gni b/build/json_schema_api.gni
index 83846a2..68a9fdd 100644
--- a/build/json_schema_api.gni
+++ b/build/json_schema_api.gni
@@ -183,6 +183,7 @@
       sources += get_target_outputs(":$schema_generator_name")
       public_deps += [ ":$schema_generator_name" ]
       deps += [ "//tools/json_schema_compiler:generated_api_util" ]
+      configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
     }
 
     if (bundle) {