linux/x11: Fix event dispatch in menus in High DPI.

ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h

 // Copyright (c) 2012 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 UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_X11_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_X11_H_
 
 #include <X11/extensions/shape.h>
 #include <X11/Xlib.h>
 
@@ skipping 146 matching lines @@
   void SetCapture() override;
   void ReleaseCapture() override;
   void SetCursorNative(gfx::NativeCursor cursor) override;
   void MoveCursorToNative(const gfx::Point& location) override;
   void OnCursorVisibilityChangedNative(bool show) override;
 
   // Overridden frm ui::EventSource
   ui::EventProcessor* GetEventProcessor() override;
 
  private:
+  friend class DesktopWindowTreeHostX11HighDPITest;
   // Initializes our X11 surface to draw on. This method performs all
   // initialization related to talking to the X11 server.
   void InitX11Window(const Widget::InitParams& params);
 
   // Creates an aura::WindowEventDispatcher to contain the |content_window|,
   // along with all aura client objects that direct behavior.
   aura::WindowEventDispatcher* InitDispatcher(const Widget::InitParams& params);
 
   // Adjusts |requested_size| to avoid the WM "feature" where setting the
   // window size to the monitor size causes the WM to set the EWMH for
@@ skipping 25 matching lines @@
   // Dispatches a mouse event, taking mouse capture into account. If a
   // different host has capture, we translate the event to its coordinate space
   // and dispatch it to that host instead.
   void DispatchMouseEvent(ui::MouseEvent* event);
 
   // Dispatches a touch event, taking capture into account. If a different host
   // has capture, then touch-press events are translated to its coordinate space
   // and dispatched to that host instead.
   void DispatchTouchEvent(ui::TouchEvent* event);
 
+  // Updates the location of |located_event| to be in |host|'s coordinate system
+  // so that it can be dispatched to |host|.
+  void ConvertEventToDifferentHost(ui::LocatedEvent* located_event,
+                                   DesktopWindowTreeHostX11* host);
+
   // Resets the window region for the current widget bounds if necessary.
   void ResetWindowRegion();
 
   // Serializes an image to the format used by _NET_WM_ICON.
   void SerializeImageRepresentation(const gfx::ImageSkiaRep& rep,
                                     std::vector<unsigned long>* data);
 
   // Returns an 8888 ARGB visual. Can return NULL if there is no matching
   // visual on this display.
   Visual* GetARGBVisual();
@@ skipping 114 matching lines @@
   base::CancelableCallback<void()> delayed_resize_task_;
 
   base::WeakPtrFactory<DesktopWindowTreeHostX11> close_widget_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopWindowTreeHostX11);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_X11_H_