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

To reduce pre-processed size of indexed_db_default_mojom_traits.h,
this CL replaces .mojom.h with .mojom-forward.h.

This CL has no behavior changes.

Bug: 1001360
Change-Id: I769dbf5bd67181276bce08369c493e570c530b58
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1806613Reviewed-by: Kent Tamura <tkent@chromium.org>
Reviewed-by: Daniel Murphy <dmurph@chromium.org>
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Commit-Queue: Gyuyoung Kim <gyuyoung@igalia.com>
Cr-Commit-Position: refs/heads/master@{#697936}

third_party/blink/common/indexeddb/indexed_db_default_mojom_traits.cc

@@ -11,6 +11,7 @@
 #include "third_party/blink/public/common/indexeddb/indexeddb_key.h"
 #include "third_party/blink/public/common/indexeddb/indexeddb_key_range.h"
 #include "third_party/blink/public/common/indexeddb/indexeddb_metadata.h"
+#include "third_party/blink/public/mojom/indexeddb/indexeddb.mojom.h"
 
 namespace mojo {
 

third_party/blink/public/common/indexeddb/indexed_db_default_mojom_traits.h

@@ -8,7 +8,7 @@
 #include "base/containers/span.h"
 #include "third_party/blink/public/common/common_export.h"
 #include "third_party/blink/public/common/indexeddb/indexeddb_key.h"
-#include "third_party/blink/public/mojom/indexeddb/indexeddb.mojom.h"
+#include "third_party/blink/public/mojom/indexeddb/indexeddb.mojom-forward.h"
 
 namespace mojo {