Revert of Revive experiment to isolate shell operations.

chrome/utility/ipc_shell_handler_win.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 CHROME_UTILITY_IPC_SHELL_HANDLER_WIN_H_
+#define CHROME_UTILITY_IPC_SHELL_HANDLER_WIN_H_
+
+#include <Windows.h>
+
+#include <tuple>
+#include <vector>
+
+#include "base/compiler_specific.h"
+#include "base/macros.h"
+#include "base/strings/string16.h"
+#include "chrome/utility/utility_message_handler.h"
+
+namespace base {
+class FilePath;
+}  // namespace base
+
+using GetOpenFileNameFilter =
+    std::vector<std::tuple<base::string16, base::string16>>;
+
+struct ChromeUtilityMsg_GetSaveFileName_Params;
+
+// Handles requests to execute shell operations. Used to protect the browser
+// process from instability due to 3rd-party shell extensions. Must be invoked
+// in a non-sandboxed utility process.
+// Note: This class is deprecated in favor of the Mojo version.
+//       See chrome/common/shell_handler_win.mojom and
+//       chrome/utility/shell_handler_impl_win.h
+class IPCShellHandler : public UtilityMessageHandler {
+ public:
+  IPCShellHandler();
+  ~IPCShellHandler() override;
+
+  // IPC::Listener implementation
+  bool OnMessageReceived(const IPC::Message& message) override;
+
+ private:
+  void OnGetOpenFileName(HWND owner,
+                         DWORD flags,
+                         const GetOpenFileNameFilter& filter,
+                         const base::FilePath& initial_directory,
+                         const base::FilePath& filename);
+
+  void OnGetSaveFileName(const ChromeUtilityMsg_GetSaveFileName_Params& params);
+
+  DISALLOW_COPY_AND_ASSIGN(IPCShellHandler);
+};
+
+#endif  // CHROME_UTILITY_IPC_SHELL_HANDLER_WIN_H_