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

mojo/services/public/interfaces/window_manager2/window_manager2.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 {
+module mojo;
 
 // TODO(sky): rethink these, and if we do in fact need it come up with a better
 // name.
 
 [Client=WindowManagerClient2]
 interface WindowManagerService2 {
   SetCapture(uint32 view_id) => (bool success);
   FocusWindow(uint32 view_id) => (bool success);
   ActivateWindow(uint32 view_id) => (bool success);
 };
 
 [Client=WindowManagerService2]
 interface WindowManagerClient2 {
   // Called when the window manager is ready to use (in the event a client
   // connects to it before it has been initialized).
   OnWindowManagerReady();
 
   // TODO(beng): how is the WM supposed to know if a view is known to a client
   //             or not?
   OnCaptureChanged(uint32 old_capture_view_id, uint32 new_capture_view_id);
 
   OnFocusChanged(uint32 old_focused_node_id, uint32 new_focused_node_id);
   OnActiveWindowChanged(uint32 old_focused_window, uint32 new_focused_window);
 };
-
-}