Move fetching logic out of ApplicationManager, eliminate url mappings.

mojo/fetcher/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 MOJO_SHELL_NETWORK_FETCHER_H_
-#define MOJO_SHELL_NETWORK_FETCHER_H_
+#ifndef MOJO_FETCHER_NETWORK_FETCHER_H_
+#define MOJO_FETCHER_NETWORK_FETCHER_H_
 
 #include "mojo/shell/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 URLLoaderFactory;
 
-namespace shell {
+namespace fetcher {
 
 // Implements Fetcher for http[s] files.
-class NetworkFetcher : public Fetcher {
+class NetworkFetcher : public shell::Fetcher {
  public:
   NetworkFetcher(bool disable_cache,
                  mojo::URLRequestPtr request,
                  URLLoaderFactory* url_loader_factory,
                  const FetchCallback& loader_callback);
 
   ~NetworkFetcher() override;
 
  private:
   // TODO(hansmuller): Revisit this when a real peek operation is available.
@@ skipping 39 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 fetcher
 }  // namespace mojo
 
-#endif  // MOJO_SHELL_NETWORK_FETCHER_H_
+#endif  // MOJO_FETCHER_NETWORK_FETCHER_H_