Export Initialize function

Change-Id: I1dc55c5b76b04b73a439d46ffa2fb5a4a3f90ae6
Bug: dawn:1977
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/146684
Reviewed-by: Ben Clayton <[email protected]>
Commit-Queue: Ben Clayton <[email protected]>
Kokoro: Kokoro <[email protected]>

Author: sparist

src/dawn/node/Module.cpp

@@ -90,7 +90,7 @@ struct Coverage {
 // Initialize() initializes the Dawn node module, registering all the WebGPU
 // types into the global object, and adding the 'create' function on the exported
 // object.
-Napi::Object Initialize(Napi::Env env, Napi::Object exports) {
+NAPI_MODULE_EXPORT Napi::Object Initialize(Napi::Env env, Napi::Object exports) {
     // Set all the Dawn procedure function pointers.
     dawnProcSetProcs(&dawn::native::GetProcs());