Rework ash::CursorManager into a corewm object, to share code with desktop.

ui/views/widget/desktop_aura/desktop_native_cursor_manager.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_NATIVE_CURSOR_MANAGER_H_
+#define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_CURSOR_MANAGER_H_
+
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "ui/views/corewm/native_cursor_manager.h"
+#include "ui/views/views_export.h"
+
+namespace aura {
+class RootWindow;
+}
+
+namespace ui {
+class CursorLoader;
+}
+
+namespace views {
+
+namespace corewm {
+class NativeCursorManagerDelegate;
+}
+
+// A NativeCursorManager that interacts with only one RootWindow. (Unlike the
+// one in ash, which interacts with all the RootWindows that ash knows about.)
+class VIEWS_EXPORT DesktopNativeCursorManager
+    : public views::corewm::NativeCursorManager {
+ public:
+  explicit DesktopNativeCursorManager(aura::RootWindow* window);
+  virtual ~DesktopNativeCursorManager();
+
+ private:
+  // Overridden from views::corewm::NativeCursorManager:
+  virtual void SetDeviceScaleFactor(
+      float device_scale_factor,
+      views::corewm::NativeCursorManagerDelegate* delegate) OVERRIDE;
+  virtual void SetCursor(
+      gfx::NativeCursor cursor,
+      views::corewm::NativeCursorManagerDelegate* delegate) OVERRIDE;
+  virtual void SetVisibility(
+      bool visible,
+      views::corewm::NativeCursorManagerDelegate* delegate) OVERRIDE;
+  virtual void SetMouseEventsEnabled(
+      bool enabled,
+      views::corewm::NativeCursorManagerDelegate* delegate) OVERRIDE;
+
+  aura::RootWindow* root_window_;
+  scoped_ptr<ui::CursorLoader> cursor_loader_;
+
+  DISALLOW_COPY_AND_ASSIGN(DesktopNativeCursorManager);
+};
+
+}  // namespace views
+
+#endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_CURSOR_MANAGER_H_
+