Use native coordinates to warp the cursor to another display.

ash/host/ash_window_tree_host_x11.cc

 // Copyright 2014 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.
 
 #include "ash/host/ash_window_tree_host_x11.h"
 
 #include <X11/extensions/Xfixes.h>
 #include <X11/extensions/XInput2.h>
 #include <X11/Xatom.h>
 #include <X11/Xlib.h>
@@ skipping 236 matching lines @@
 void AshWindowTreeHostX11::SetRootWindowTransformer(
     scoped_ptr<RootWindowTransformer> transformer) {
   transformer_helper_.SetRootWindowTransformer(transformer.Pass());
   UpdateIsInternalDisplay();
   if (pointer_barriers_) {
     UnConfineCursor();
     ConfineCursorToRootWindow();
   }
 }
 
+gfx::Insets AshWindowTreeHostX11::GetHostInsets() const {
+  return transformer_helper_.GetHostInsets();
+}
+
 aura::WindowTreeHost* AshWindowTreeHostX11::AsWindowTreeHost() { return this; }
 
 void AshWindowTreeHostX11::SetBounds(const gfx::Rect& bounds) {
   WindowTreeHostX11::SetBounds(bounds);
   UpdateIsInternalDisplay();
   if (pointer_barriers_) {
     UnConfineCursor();
     ConfineCursorToRootWindow();
   }
 }
@@ skipping 142 matching lines @@
                        1);
     }
   }
 }
 
 AshWindowTreeHost* AshWindowTreeHost::Create(const gfx::Rect& initial_bounds) {
   return new AshWindowTreeHostX11(initial_bounds);
 }
 
 }  // namespace ash