refactor: rename the atom directory to shell

shell/browser/ui/tray_icon_gtk.h

@@ -0,0 +1,42 @@
+// Copyright (c) 2014 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_UI_TRAY_ICON_GTK_H_
+#define ATOM_BROWSER_UI_TRAY_ICON_GTK_H_
+
+#include <memory>
+#include <string>
+
+#include "atom/browser/ui/tray_icon.h"
+#include "ui/views/linux_ui/status_icon_linux.h"
+
+namespace views {
+class StatusIconLinux;
+}
+
+namespace atom {
+
+class TrayIconGtk : public TrayIcon, public views::StatusIconLinux::Delegate {
+ public:
+  TrayIconGtk();
+  ~TrayIconGtk() override;
+
+  // TrayIcon:
+  void SetImage(const gfx::Image& image) override;
+  void SetToolTip(const std::string& tool_tip) override;
+  void SetContextMenu(AtomMenuModel* menu_model) override;
+
+ private:
+  // views::StatusIconLinux::Delegate:
+  void OnClick() override;
+  bool HasClickAction() override;
+
+  std::unique_ptr<views::StatusIconLinux> icon_;
+
+  DISALLOW_COPY_AND_ASSIGN(TrayIconGtk);
+};
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_UI_TRAY_ICON_GTK_H_