Move shell service to toplevel shell namespace

media/mojo/services/default_mojo_media_client.h

 // 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.
 
 #ifndef MEDIA_MOJO_SERVICES_DEFAULT_MOJO_MEDIA_CLIENT_H_
 #define MEDIA_MOJO_SERVICES_DEFAULT_MOJO_MEDIA_CLIENT_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "media/mojo/services/mojo_media_client.h"
 
 namespace media {
 
 // Default MojoMediaClient for MojoMediaApplication.
 class DefaultMojoMediaClient : public MojoMediaClient {
  public:
   DefaultMojoMediaClient();
   ~DefaultMojoMediaClient() final;
 
   // MojoMediaClient implementation.
   void Initialize() final;
   std::unique_ptr<CdmFactory> CreateCdmFactory(
-      mojo::shell::mojom::InterfaceProvider* /* interface_provider */) final;
+      shell::mojom::InterfaceProvider* /* interface_provider */) final;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DefaultMojoMediaClient);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_DEFAULT_MOJO_MEDIA_CLIENT_H_