linux/x11: Fix setting window bounds in High DPI.

ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h

Index: ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h
diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h
index fbd18d631732a3a651f3d3a40dcd1453254e134c..f32de5bab610808ec4cf5c7344a871cba12f7a5e 100644
--- a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h
+++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h
@@ -147,6 +147,7 @@ class VIEWS_EXPORT DesktopWindowTreeHostX11
   void SizeConstraintsChanged() override;
 
   // Overridden from aura::WindowTreeHost:
+  gfx::Transform GetRootTransform() const override;
   ui::EventSource* GetEventSource() override;
   gfx::AcceleratedWidget GetAcceleratedWidget() override;
   void Show() override;
@@ -243,6 +244,10 @@ class VIEWS_EXPORT DesktopWindowTreeHostX11
 
   void DelayedResize(const gfx::Size& size);
 
+  gfx::Rect GetWorkAreaBoundsInPixels() const;
+  gfx::Rect ToDIPRect(const gfx::Rect& rect_in_pixels) const;
+  gfx::Rect ToPixelRect(const gfx::Rect& rect_in_dip) const;
+
   // X11 things
   // The display and the native X window hosting the root window.
   XDisplay* xdisplay_;
@@ -257,7 +262,7 @@ class VIEWS_EXPORT DesktopWindowTreeHostX11
   bool window_mapped_;
 
   // The bounds of |xwindow_|.
-  gfx::Rect bounds_;
+  gfx::Rect bounds_in_pixels_;
 
   // Whenever the bounds are set, we keep the previous set of bounds around so
   // we can have a better chance of getting the real |restored_bounds_|. Window