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

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

 // Copyright 2013 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.sample"]
+module sample;
+
 import "sample_import.mojom";
 import "sample_import2.mojom";
 
-[JavaPackage="org.chromium.mojo.bindings.test.mojom.sample"]
-module sample {
-
 const uint8 kTwelve = 12;
 const uint64 kTooBigForSignedInt64 = 9999999999999999999;
 
 const double kDoubleInfinity = double.INFINITY;
 const double kDoubleNegativeInfinity = double.NEGATIVE_INFINITY;
 const double kDoubleNaN = double.NAN;
 
 const float kFloatInfinity = float.INFINITY;
 const float kFloatNegativeInfinity = float.NEGATIVE_INFINITY;
 const float kFloatNaN = float.NAN;
@@ skipping 96 matching lines @@
 
 interface ServiceClient {
   DidFrobinate@0(int32 result@0);
 };
 
 // This interface is referenced above where it is defined. It also refers to
 // itself from a method.
 interface Port {
   PostMessage@0(string message_text@0, Port port@1);
 };
-
-}