webgpu.h: use UINT32_MAX etc. to define UNDEFINED macros

Fixed: dawn:2226
Change-Id: I1cc93a001e968b6dcef2945c0352129ff54d2309
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/162104
Auto-Submit: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
diff --git a/dawn.json b/dawn.json
index 00c03d9..b51706b 100644
--- a/dawn.json
+++ b/dawn.json
@@ -3643,7 +3643,7 @@
     "whole size" : {
         "category": "constant",
         "type": "uint64_t",
-        "value":  "(0xffffffffffffffffULL)"
+        "value":  "UINT64_MAX"
     },
     "whole map size" : {
         "category": "constant",
@@ -3653,32 +3653,32 @@
     "copy stride undefined" : {
         "category": "constant",
         "type": "uint32_t",
-        "value":  "(0xffffffffUL)"
+        "value":  "UINT32_MAX"
     },
     "limit u32 undefined" : {
         "category": "constant",
         "type": "uint32_t",
-        "value":  "(0xffffffffUL)"
+        "value":  "UINT32_MAX"
     },
     "limit u64 undefined" : {
         "category": "constant",
         "type": "uint64_t",
-        "value":  "(0xffffffffffffffffULL)"
+        "value":  "UINT64_MAX"
     },
     "array layer count undefined" : {
         "category": "constant",
         "type": "uint32_t",
-        "value":  "(0xffffffffUL)"
+        "value":  "UINT32_MAX"
     },
     "mip level count undefined" : {
         "category": "constant",
         "type": "uint32_t",
-        "value":  "(0xffffffffUL)"
+        "value":  "UINT32_MAX"
     },
     "query set index undefined" : {
         "category": "constant",
         "type": "uint32_t",
-        "value":  "(0xffffffffUL)"
+        "value":  "UINT32_MAX"
     },
     "ObjectType": {
       "_comment": "Only used for the wire",