Revive experiment to isolate shell operations.

chrome/utility/shell_handler_impl_win.h

 // Copyright 2016 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_SHELL_HANDLER_IMPL_WIN_H_
 #define CHROME_UTILITY_SHELL_HANDLER_IMPL_WIN_H_
 
+#include <tuple>
+#include <vector>
+
 #include "base/macros.h"
 #include "chrome/common/shell_handler_win.mojom.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
 // Implements the ShellHandler mojo interface.
 class ShellHandlerImpl : public mojom::ShellHandler {
  public:
   static void Create(mojom::ShellHandlerRequest request);
 
  private:
   explicit ShellHandlerImpl(mojom::ShellHandlerRequest request);
   ~ShellHandlerImpl() override;
 
   // mojom::ShellHandler:
   void IsPinnedToTaskbar(const IsPinnedToTaskbarCallback& callback) override;
 
+  void DoGetOpenFileName(
+      uint32_t owner,
+      uint32_t flags,
+      const std::vector<std::tuple<base::string16, base::string16>>& filters,
+      const base::FilePath& initial_directory,
+      const base::FilePath& filename,
+      const DoGetOpenFileNameCallback& callback) override;
+
+  void DoGetSaveFileName(
+      uint32_t owner,
+      uint32_t flags,
+      const std::vector<std::tuple<base::string16, base::string16>>& filters,
+      uint32_t one_based_filter_index,
+      const base::FilePath& initial_directory,
+      const base::FilePath& suggested_filename,
+      const base::FilePath& default_extension,
+      const DoGetSaveFileNameCallback& callback) override;
+
   mojo::StrongBinding<ShellHandler> binding_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellHandlerImpl);
 };
 
 #endif  // CHROME_UTILITY_SHELL_HANDLER_IMPL_WIN_H_