Use the mojo::shell namespace consistently underly shell/.

shell/application_manager/network_fetcher.h

 // 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.
 
 #ifndef SHELL_APPLICATION_MANAGER_NETWORK_FETCHER_H_
 #define SHELL_APPLICATION_MANAGER_NETWORK_FETCHER_H_
 
 #include "shell/application_manager/fetcher.h"
 
 #include "base/files/file_path.h"
 #include "base/memory/weak_ptr.h"
 #include "mojo/services/network/public/interfaces/url_loader.mojom.h"
 #include "url/gurl.h"
 
 namespace mojo {
 
 class NetworkService;
 
+namespace shell {
+
 // Implements Fetcher for http[s] files.
 class NetworkFetcher : public Fetcher {
  public:
   NetworkFetcher(bool disable_cache,
                  const GURL& url,
                  NetworkService* network_service,
                  const FetchCallback& loader_callback);
 
   ~NetworkFetcher() override;
 
@@ skipping 38 matching lines @@
   bool disable_cache_;
   const GURL url_;
   URLLoaderPtr url_loader_;
   URLResponsePtr response_;
   base::FilePath path_;
   base::WeakPtrFactory<NetworkFetcher> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkFetcher);
 };
 
+}  // namespace shell
 }  // namespace mojo
 
 #endif  // SHELL_APPLICATION_MANAGER_NETWORK_FETCHER_H_