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

mojo/services/test_service/test_request_tracker.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 mojo.test {
+module mojo.test;
 
 // Various counters that services can periodically send to a
 // TestTrackedRequestService for recording.
 struct ServiceStats {
   uint64 num_new_requests;
   double health;
 };
 
 // A per-service summary of all the ServiceStats the
 // TestTrackedRequestService has observed.
@@ skipping 16 matching lines @@
   // Upload a ServiceStats for tracking.
   RecordStats(uint64 client_id, ServiceStats? stats);
 };
 
 // The client-side contract for uploading ServiceStats to TestRequestTracker.
 interface TestRequestTrackerClient {
   const uint64 kInvalidId = 0;
   // Handshake to tell the client its global identifier and get the name.
   SetIdAndReturnName(uint64 id) => (string? service_name);
 };
-
-}  // module mojo.test