Mojo JS bindings generator doesn't generate import-qualified struct references

mojo/public/interfaces/bindings/tests/test_structs.mojom

Index: mojo/public/interfaces/bindings/tests/test_structs.mojom
diff --git a/mojo/public/interfaces/bindings/tests/test_structs.mojom b/mojo/public/interfaces/bindings/tests/test_structs.mojom
index 6c0c429fd585fc588824e880effcd2781061c3c6..66cd2e965efe8c3922c6484715bbc3cec468af0a 100644
--- a/mojo/public/interfaces/bindings/tests/test_structs.mojom
+++ b/mojo/public/interfaces/bindings/tests/test_structs.mojom
@@ -2,16 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import "mojo/public/interfaces/bindings/tests/rect.mojom"
+
 [JavaPackage="org.chromium.mojo.bindings.test.mojom.test_structs"]
 module mojo.test {
 
-struct Rect {
-  int32 x;
-  int32 y;
-  int32 width;
-  int32 height;
-};
-
 struct NamedRegion {
   string? name;
   Rect[]? rects;