Move shell service to toplevel shell namespace

content/shell/utility/shell_content_utility_client.cc

 // 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.
 
 #include "content/shell/utility/shell_content_utility_client.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "content/common/mojo/static_loader.h"
 #include "content/public/test/test_mojo_app.h"
 
 namespace content {
 
 namespace {
 
-std::unique_ptr<mojo::ShellClient> CreateTestApp() {
-  return std::unique_ptr<mojo::ShellClient>(new TestMojoApp);
+std::unique_ptr<shell::ShellClient> CreateTestApp() {
+  return std::unique_ptr<shell::ShellClient>(new TestMojoApp);
 }
 
 }  // namespace
 
 ShellContentUtilityClient::~ShellContentUtilityClient() {
 }
 
 void ShellContentUtilityClient::RegisterMojoApplications(
     StaticMojoApplicationMap* apps) {
   apps->insert(std::make_pair(kTestMojoAppUrl, base::Bind(&CreateTestApp)));
 }
 
 }  // namespace content