Remove mojo/tools/, not needed in chromium

mojo/tools/package_manager/package_fetcher.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 MOJO_TOOLS_PACKAGE_MANAGER_FETCHER_H_
-#define MOJO_TOOLS_PACKAGE_MANAGER_FETCHER_H_
-
-#include "base/files/file.h"
-#include "base/files/file_path.h"
-#include "mojo/common/handle_watcher.h"
-#include "mojo/public/cpp/system/macros.h"
-#include "mojo/services/public/interfaces/network/network_service.mojom.h"
-#include "mojo/services/public/interfaces/network/url_loader.mojom.h"
-#include "url/gurl.h"
-
-namespace base {
-class FilePath;
-}  // namespace base
-
-namespace mojo {
-
-class PackageFetcherDelegate;
-
-class PackageFetcher {
- public:
-  PackageFetcher(NetworkService* network_service,
-                 PackageFetcherDelegate* delegate,
-                 const GURL& url);
-  virtual ~PackageFetcher();
-
- private:
-  void OnReceivedResponse(URLResponsePtr response);
-
-  void ReadData(MojoResult);
-  void WaitToReadMore();
-
-  PackageFetcherDelegate* delegate_;
-
-  // URL of the package.
-  GURL url_;
-
-  URLLoaderPtr loader_;
-
-  // Valid once file has started streaming.
-  ScopedDataPipeConsumerHandle body_;
-  common::HandleWatcher handle_watcher_;
-
-  base::FilePath output_file_name_;
-  base::File output_file_;
-
-  MOJO_DISALLOW_COPY_AND_ASSIGN(PackageFetcher);
-};
-
-class PackageFetcherDelegate {
- public:
-  virtual void FetchSucceeded(const GURL& url, const base::FilePath& name) = 0;
-
-  virtual void FetchFailed(const GURL& url) = 0;
-};
-
-}  // namespace mojo
-
-#endif  // MOJO_TOOLS_PACKAGE_MANAGER_FETCHER_H_