Chrome 138 size requirement changes for GPUBuffers mapped at creation

api/GPUDevice.json

@@ -393,6 +393,47 @@
             "standard_track": true,
             "deprecated": false
           }
+        },
+        "rangeerror_if_mappedatcreation_true_and_size_not_4_multiple": {
+          "__compat": {
+            "description": "`RangeError` thrown if `mappedAtCreation` is `true` and `size` is not a multiple of `4`.",
+            "tags": [
+              "web-features:webgpu"
+            ],
+            "support": {
+              "chrome": {
+                "version_added": "138",
+                "partial_implementation": true,
+                "notes": "Supported on ChromeOS, macOS, and Windows only."
+              },
+              "chrome_android": {
+                "version_added": "138"
+              },
+              "deno": {
+                "version_added": false
+              },
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
         }
       },
       "createCommandEncoder": {