Gtk3 ui: Add libgtk3ui as a separate build component

chrome/browser/ui/libgtk2ui/app_indicator_icon.h

-// Copyright 2013 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_BROWSER_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_
-#define CHROME_BROWSER_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_
-
-#include <memory>
-
-#include "base/files/file_path.h"
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "base/nix/xdg_util.h"
-#include "chrome/browser/ui/libgtk2ui/gtk2_signal.h"
-#include "ui/views/linux_ui/status_icon_linux.h"
-
-typedef struct _AppIndicator AppIndicator;
-typedef struct _GtkWidget GtkWidget;
-
-class SkBitmap;
-
-namespace gfx {
-class ImageSkia;
-}
-
-namespace ui {
-class MenuModel;
-}
-
-namespace libgtk2ui {
-class AppIndicatorIconMenu;
-
-// Status icon implementation which uses libappindicator.
-class AppIndicatorIcon : public views::StatusIconLinux {
- public:
-  // The id uniquely identifies the new status icon from other chrome status
-  // icons.
-  AppIndicatorIcon(std::string id,
-                   const gfx::ImageSkia& image,
-                   const base::string16& tool_tip);
-  ~AppIndicatorIcon() override;
-
-  // Indicates whether libappindicator so could be opened.
-  static bool CouldOpen();
-
-  // Overridden from views::StatusIconLinux:
-  void SetImage(const gfx::ImageSkia& image) override;
-  void SetToolTip(const base::string16& tool_tip) override;
-  void UpdatePlatformContextMenu(ui::MenuModel* menu) override;
-  void RefreshPlatformContextMenu() override;
-
- private:
-  struct SetImageFromFileParams {
-    // The temporary directory in which the icon(s) were written.
-    base::FilePath parent_temp_dir;
-
-    // The icon theme path to pass to libappindicator.
-    std::string icon_theme_path;
-
-    // The icon name to pass to libappindicator.
-    std::string icon_name;
-  };
-
-  // Writes |bitmap| to a temporary directory on a worker thread. The temporary
-  // directory is selected based on KDE's quirks.
-  static SetImageFromFileParams WriteKDE4TempImageOnWorkerThread(
-      const SkBitmap& bitmap,
-      const base::FilePath& existing_temp_dir);
-
-  // Writes |bitmap| to a temporary directory on a worker thread. The temporary
-  // directory is selected based on Unity's quirks.
-  static SetImageFromFileParams WriteUnityTempImageOnWorkerThread(
-      const SkBitmap& bitmap,
-      int icon_change_count,
-      const std::string& id);
-
-  void SetImageFromFile(const SetImageFromFileParams& params);
-  void SetMenu();
-
-  // Sets a menu item at the top of the menu as a replacement for the status
-  // icon click action. Clicking on this menu item should simulate a status icon
-  // click by despatching a click event.
-  void UpdateClickActionReplacementMenuItem();
-
-  // Callback for when the status icon click replacement menu item is activated.
-  void OnClickActionReplacementMenuItemActivated();
-
-  std::string id_;
-  std::string tool_tip_;
-
-  // Used to select KDE or Unity for image setting.
-  base::nix::DesktopEnvironment desktop_env_;
-
-  // Gtk status icon wrapper
-  AppIndicator* icon_;
-
-  std::unique_ptr<AppIndicatorIconMenu> menu_;
-  ui::MenuModel* menu_model_;
-
-  base::FilePath temp_dir_;
-  int icon_change_count_;
-
-  base::WeakPtrFactory<AppIndicatorIcon> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(AppIndicatorIcon);
-};
-
-}  // namespace libgtk2ui
-
-#endif  // CHROME_BROWSER_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_