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

mojo/public/interfaces/bindings/tests/sample_import.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.
 
 [JavaPackage="org.chromium.mojo.bindings.test.mojom.imported"]
-module imported {
+module imported;
 
 // This sample just defines some types that are imported into
 // sample_service.mojom, to show how import works.
 
 enum Shape {
   RECTANGLE = 1,
   CIRCLE,
   TRIANGLE,
   LAST = TRIANGLE,
 };
@@ skipping 12 matching lines @@
 };
 
 struct Point {
   int32 x;
   int32 y;
 };
 
 interface ImportedInterface {
   DoSomething();
 };
-
-}  // module imported