Add module suffix in .mojom files for components/arc

components/arc/common/arc_bridge.mojom

 // Copyright 2015 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 arc;
+module arc.mojom;
 
 import "app.mojom";
 import "audio.mojom";
 import "auth.mojom";
 import "bluetooth.mojom";
 import "clipboard.mojom";
 import "crash_collector.mojom";
 import "ime.mojom";
 import "input.mojom";
 import "intent_helper.mojom";
@@ skipping 56 matching lines @@
   // Notifies Chrome that the VideoInstance interface is ready.
   [MinVersion=6] OnVideoInstanceReady@107(VideoInstance instance_ptr);
 };
 
 interface ArcBridgeInstance {
   // Establishes full-duplex communication with the host.
   // |host_ptr| is the MessagePipe endpoint that is bound to the
   // ArcBridgeHostPtr binding.
   Init@0(ArcBridgeHost host_ptr);
 };