Revert of Move fetching logic out of ApplicationManager, eliminate url mappings.

mojo/shell/local_fetcher.h

Index: mojo/shell/local_fetcher.h
diff --git a/mojo/shell/local_fetcher.h b/mojo/shell/local_fetcher.h
new file mode 100644
index 0000000000000000000000000000000000000000..53b598fab49b705b16760409111df1a0f3263799
--- /dev/null
+++ b/mojo/shell/local_fetcher.h
@@ -0,0 +1,59 @@
+// 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_LOCAL_FETCHER_H_
+#define MOJO_SHELL_LOCAL_FETCHER_H_
+
+#include <string>
+
+#include "base/files/file_path.h"
+#include "mojo/shell/fetcher.h"
+#include "url/gurl.h"
+
+namespace mojo {
+
+class NetworkService;
+
+namespace shell {
+
+// Implements Fetcher for file:// URLs.
+class LocalFetcher : public Fetcher {
+ public:
+  LocalFetcher(NetworkService* network_service,
+               const GURL& url,
+               const GURL& url_without_query,
+               const FetchCallback& loader_callback);
+
+  void GetMimeTypeFromFileCallback(const mojo::String& mime_type);
+
+ private:
+  const GURL& GetURL() const override;
+  GURL GetRedirectURL() const override;
+  GURL GetRedirectReferer() const override;
+
+  URLResponsePtr AsURLResponse(base::TaskRunner* task_runner,
+                               uint32_t skip) override;
+
+  void AsPath(
+      base::TaskRunner* task_runner,
+      base::Callback<void(const base::FilePath&, bool)> callback) override;
+
+  std::string MimeType() override;
+
+  bool HasMojoMagic() override;
+
+  bool PeekFirstLine(std::string* line) override;
+
+  GURL url_;
+  base::FilePath path_;
+  std::string mime_type_;
+
+  DISALLOW_COPY_AND_ASSIGN(LocalFetcher);
+};
+
+}  // namespace shell
+
+}  // namespace mojo
+
+#endif  // MOJO_SHELL_LOCAL_FETCHER_H_