exo: Fix cursor scale when crossing displays

components/exo/wm_helper.h

 // Copyright 2016 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 COMPONENTS_EXO_WM_HELPER_H_
 #define COMPONENTS_EXO_WM_HELPER_H_
 
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "ui/base/cursor/cursor.h"
+#include "ui/gfx/native_widget_types.h"
 
 namespace aura {
 class Window;
 }
 
 namespace display {
 class Display;
 class ManagedDisplayInfo;
 }
 
@@ skipping 96 matching lines @@
   virtual aura::Window* GetFocusedWindow() const = 0;
   virtual ui::CursorSetType GetCursorSet() const = 0;
   virtual void AddPreTargetHandler(ui::EventHandler* handler) = 0;
   virtual void PrependPreTargetHandler(ui::EventHandler* handler) = 0;
   virtual void RemovePreTargetHandler(ui::EventHandler* handler) = 0;
   virtual void AddPostTargetHandler(ui::EventHandler* handler) = 0;
   virtual void RemovePostTargetHandler(ui::EventHandler* handler) = 0;
   virtual bool IsMaximizeModeWindowManagerEnabled() const = 0;
   virtual bool IsSpokenFeedbackEnabled() const = 0;
   virtual void PlayEarcon(int sound_key) const = 0;
+  virtual void SetCursor(gfx::NativeCursor cursor) = 0;
 
  protected:
   WMHelper();
 
   void NotifyWindowActivated(aura::Window* gained_active,
                              aura::Window* lost_active);
   void NotifyWindowFocused(aura::Window* gained_focus,
                            aura::Window* lost_focus);
   void NotifyCursorVisibilityChanged(bool is_visible);
   void NotifyCursorSetChanged(ui::CursorSetType cursor_set);
@@ skipping 13 matching lines @@
   base::ObserverList<AccessibilityObserver> accessibility_observers_;
   base::ObserverList<InputDeviceEventObserver> input_device_event_observers_;
   base::ObserverList<DisplayConfigurationObserver> display_config_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(WMHelper);
 };
 
 }  // namespace exo
 
 #endif  // COMPONENTS_EXO_WM_HELPER_H_