Promote LoseForTesting to ForceLoss device so that user agents can use.

Bug: chromium:1356738
Change-Id: I348837ad4224124d9adba1ecf69a05b2060760c9
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/100566
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Loko Kung <lokokung@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>
diff --git a/dawn.json b/dawn.json
index e07bb57..8dedc59 100644
--- a/dawn.json
+++ b/dawn.json
@@ -1159,7 +1159,11 @@
                 "tags": ["dawn"]
             },
             {
-                "name": "lose for testing",
+                "name": "force loss",
+                "args": [
+                    {"name": "type", "type": "device lost reason"},
+                    {"name": "message", "type": "char", "annotation": "const*", "length": "strlen"}
+                ],
                 "tags": ["dawn"]
             },
             {