mojom: Remove braces from module statements and make them come first.

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 3216caf6c91cee1caf15c5e6b5d290588dd9edfa..b525a2f8f28d3d094fac63f93b58ecd8477f6b41 100644
--- a/mojo/public/interfaces/bindings/tests/test_structs.mojom
+++ b/mojo/public/interfaces/bindings/tests/test_structs.mojom
@@ -2,10 +2,10 @@
 // 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 {
+module mojo.test;
+
+import "mojo/public/interfaces/bindings/tests/rect.mojom";
 
 struct NamedRegion {
   string? name;
@@ -137,5 +137,3 @@ struct MapValueTypes {
   map<string, array<array<string, 2>?>> f4;
   map<string, array<array<string, 2>, 1>> f5;
 };
-
-}