Include *.mojom-forward.h instead of .mojom.h from web_bluetooth_device_id_mojom_traits.h

To reduce pre-processed size in web_bluetooth_device_id_mojom_traits.h,
this CL replaces .mojom.h with .mojom-forward.h.

This CL has no behavior changes.

Bug: 1001360
Change-Id: I98bb17decdcd1d680d7c7e6f6be97e3e03248ae1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1804949Reviewed-by: Kent Tamura <tkent@chromium.org>
Reviewed-by: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Commit-Queue: Gyuyoung Kim <gyuyoung@igalia.com>
Cr-Commit-Position: refs/heads/master@{#697933}

third_party/blink/public/common/bluetooth/web_bluetooth_device_id_mojom_traits.h

@@ -8,7 +8,7 @@
 #include <string>
 
 #include "third_party/blink/public/common/bluetooth/web_bluetooth_device_id.h"
-#include "third_party/blink/public/mojom/bluetooth/web_bluetooth.mojom.h"
+#include "third_party/blink/public/mojom/bluetooth/web_bluetooth.mojom-forward.h"
 
 namespace mojo {