Add module suffix in .mojom files for components/arc

components/arc/intent_helper/arc_intent_helper_bridge.h

 // Copyright 2016 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.
 
 #ifndef COMPONENTS_ARC_INTENT_HELPER_ARC_INTENT_HELPER_BRIDGE_H_
 #define COMPONENTS_ARC_INTENT_HELPER_ARC_INTENT_HELPER_BRIDGE_H_
 
 #include "base/macros.h"
 #include "components/arc/arc_bridge_service.h"
 #include "components/arc/arc_service.h"
 #include "components/arc/common/intent_helper.mojom.h"
 #include "mojo/public/cpp/bindings/binding.h"
 
 namespace arc {
 
 // Receives intents from ARC.
 class ArcIntentHelperBridge : public ArcService,
                               public ArcBridgeService::Observer,
-                              public IntentHelperHost {
+                              public mojom::IntentHelperHost {
  public:
   explicit ArcIntentHelperBridge(ArcBridgeService* bridge_service);
   ~ArcIntentHelperBridge() override;
 
   // ArcBridgeService::Observer
   void OnIntentHelperInstanceReady() override;
 
-  // arc::IntentHelperHost
+  // arc::mojom::IntentHelperHost
   void OnOpenUrl(const mojo::String& url) override;
 
  private:
-  mojo::Binding<IntentHelperHost> binding_;
+  mojo::Binding<mojom::IntentHelperHost> binding_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcIntentHelperBridge);
 };
 
 }  // namespace arc
 
 #endif  // COMPONENTS_ARC_INTENT_HELPER_ARC_INTENT_HELPER_BRIDGE_H_