Decouple X11WindowEventFilter into WindowEventFilter parent class.

ui/views/widget/desktop_aura/window_event_filter.h

Index: ui/views/widget/desktop_aura/window_event_filter.h
diff --git a/ui/views/widget/desktop_aura/x11_window_event_filter.h b/ui/views/widget/desktop_aura/window_event_filter.h
similarity index 53%
copy from ui/views/widget/desktop_aura/x11_window_event_filter.h
copy to ui/views/widget/desktop_aura/window_event_filter.h
index 49aa5672c988d6bf05c4777316d1ee824ef7fb43..22c301302d35126fde858c45adaa9387be1b5e47 100644
--- a/ui/views/widget/desktop_aura/x11_window_event_filter.h
+++ b/ui/views/widget/desktop_aura/window_event_filter.h
@@ -1,43 +1,31 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright (c) 2017 The Chromium Authors. All rights reserved.

[sadrul, 2017/06/28 04:41:58]

No (c)

[msisov, 2017/06/28 20:55:04]

Done.

 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef UI_VIEWS_WIDGET_DESKTOP_AURA_X11_WINDOW_EVENT_FILTER_H_
-#define UI_VIEWS_WIDGET_DESKTOP_AURA_X11_WINDOW_EVENT_FILTER_H_
-
-#include <X11/Xlib.h>
+#ifndef UI_VIEWS_WIDGET_DESKTOP_AURA_WINDOW_EVENT_FILTER_H_
+#define UI_VIEWS_WIDGET_DESKTOP_AURA_WINDOW_EVENT_FILTER_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "ui/events/event_handler.h"
-#include "ui/gfx/x/x11_types.h"
 #include "ui/views/views_export.h"
 
-namespace aura {
-class Window;
-}
-
-namespace gfx {
-class Point;
-}
-
 namespace views {
 class DesktopWindowTreeHost;
 
-// An EventFilter that sets properties on X11 windows.
-class VIEWS_EXPORT X11WindowEventFilter : public ui::EventHandler {
+// An EventFilter that sets properties on native windows.

[sadrul, 2017/06/28 04:41:58]

Add a comment that downstream projects use this (maybe with links), because
otherwise nothing is stopping someone from merging it back with
X11WindowEventFilter.

[msisov, 2017/06/28 20:55:04]

Done.

+class VIEWS_EXPORT WindowEventFilter : public ui::EventHandler {
  public:
-  explicit X11WindowEventFilter(DesktopWindowTreeHost* window_tree_host);
-  ~X11WindowEventFilter() override;
+  explicit WindowEventFilter(DesktopWindowTreeHost* window_tree_host);
+  ~WindowEventFilter() override;
 
   // Overridden from ui::EventHandler:
   void OnMouseEvent(ui::MouseEvent* event) override;
 
  private:
   // Called when the user clicked the caption area.
-  void OnClickedCaption(ui::MouseEvent* event,
-                        int previous_click_component);
+  void OnClickedCaption(ui::MouseEvent* event, int previous_click_component);
 
   // Called when the user clicked the maximize button.
   void OnClickedMaximizeButton(ui::MouseEvent* event);
@@ -46,15 +34,10 @@ class VIEWS_EXPORT X11WindowEventFilter : public ui::EventHandler {
 
   // Dispatches a _NET_WM_MOVERESIZE message to the window manager to tell it
   // to act as if a border or titlebar drag occurred.

[sadrul, 2017/06/28 04:41:58]

This documentation should be updated to reflect what this should do, and not
mention x11 specific things (maybe as an example).

[msisov, 2017/06/28 20:55:04]

Done.

-  bool DispatchHostWindowDragMovement(int hittest,
-                                      const gfx::Point& screen_location);
-
-  // The display and the native X window hosting the root window.
-  XDisplay* xdisplay_;
-  ::Window xwindow_;
+  virtual void MaybeDispatchHostWindowDragMovement(int hittest,
+                                                   ui::MouseEvent* event);
 
-  // The native root window.
-  ::Window x_root_window_;
+  virtual void LowerWindow();

[sadrul, 2017/06/28 04:41:58]

Document what this is expected to do.

[msisov, 2017/06/28 20:55:04]

Done.

 
   DesktopWindowTreeHost* window_tree_host_;
 
@@ -65,9 +48,9 @@ class VIEWS_EXPORT X11WindowEventFilter : public ui::EventHandler {
   // components.
   int click_component_;
 
-  DISALLOW_COPY_AND_ASSIGN(X11WindowEventFilter);
+  DISALLOW_COPY_AND_ASSIGN(WindowEventFilter);
 };
 
 }  // namespace views
 
-#endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_X11_WINDOW_EVENT_FILTER_H_
+#endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_WINDOW_EVENT_FILTER_H_