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

examples/apptest/example_service.mojom

Index: examples/apptest/example_service.mojom
diff --git a/examples/apptest/example_service.mojom b/examples/apptest/example_service.mojom
index a2226fa3bf8908d992d387b164bd13358009cedc..9b0d9a0d7f92df7db71f106e1638bcb22f4d7a1f 100644
--- a/examples/apptest/example_service.mojom
+++ b/examples/apptest/example_service.mojom
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-module mojo {
+module mojo;
 
 // A simple service used to exemplify application testing within mojo_shell.
 [Client=ExampleClient]
@@ -17,5 +17,3 @@ interface ExampleService {
 interface ExampleClient {
   Pong(uint16 pong_value);
 };
-
-}