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

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Module containing entities for regression tests of the generator. Entities
 // must never be modified, instead new entity must be added to add new tests.
 [JavaPackage="org.chromium.mojo.bindings.test.mojom.regression_tests"]
-module regression_tests {
+module regression_tests;
 
 interface CheckMethodWithEmptyResponse {
 WithouParameterAndEmptyResponse() => ();
 WithParameterAndEmptyResponse(bool b) => ();
 };
 
 interface CheckNameCollision {
 WithNameCollision(bool message, bool response) => (bool message, bool response);
 };
 
@@ skipping 26 matching lines @@
 struct EmptyStruct {
 };
 
 struct A {
   B? b;
 };
 
 struct B {
   A? a;
 };
-
-}  // module imported