Add missing argument PRINT_NAME in DawnJSONGenerator

It got axed in a previous CL which removed the forwarding of unparsed arguments.

Change-Id: I173f9a1f4c058a3da18a390edc44278b942dd209
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/195756
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Auto-Submit: Jaswant Panchumarti <jaswant.panchumarti@kitware.com>
Commit-Queue: Jaswant Panchumarti <jaswant.panchumarti@kitware.com>
diff --git a/generator/CMakeLists.txt b/generator/CMakeLists.txt
index 50d2a87..6bcda79 100644
--- a/generator/CMakeLists.txt
+++ b/generator/CMakeLists.txt
@@ -168,6 +168,7 @@
     )
     DawnGenerator(
         SCRIPT "${Dawn_SOURCE_DIR}/generator/dawn_json_generator.py"
+        PRINT_NAME "${arg_PRINT_NAME}"
         OUTPUT_HEADERS HEADERS
         OUTPUT_SOURCES SOURCES
         EXTRA_PARAMETERS