gtk: Add dummy implementation of dialog.

browser/ui/file_dialog_gtk.cc

@@ -0,0 +1,41 @@
+// Copyright (c) 2014 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "browser/ui/file_dialog.h"
+
+#include "base/callback.h"
+
+namespace file_dialog {
+
+bool ShowOpenDialog(atom::NativeWindow* parent_window,
+                    const std::string& title,
+                    const base::FilePath& default_path,
+                    int properties,
+                    std::vector<base::FilePath>* paths) {
+  return false;
+}
+
+void ShowOpenDialog(atom::NativeWindow* parent_window,
+                    const std::string& title,
+                    const base::FilePath& default_path,
+                    int properties,
+                    const OpenDialogCallback& callback) {
+  callback.Run(false, std::vector<base::FilePath>());
+}
+
+bool ShowSaveDialog(atom::NativeWindow* parent_window,
+                    const std::string& title,
+                    const base::FilePath& default_path,
+                    base::FilePath* path) {
+  return false;
+}
+
+void ShowSaveDialog(atom::NativeWindow* parent_window,
+                    const std::string& title,
+                    const base::FilePath& default_path,
+                    const SaveDialogCallback& callback) {
+  callback.Run(false, base::FilePath());
+}
+
+}  // namespace file_dialog