Implement cursor changing on Mushrome

ash/wm/ash_native_cursor_manager.h

Index: ash/wm/ash_native_cursor_manager.h
diff --git a/ash/wm/ash_native_cursor_manager.h b/ash/wm/ash_native_cursor_manager.h
index fac694dd960fa93e45f9c3272d8ba0fbed57a71b..2b8abf51c07cb15bfa1e6cb409dd971425d7fbca 100644
--- a/ash/wm/ash_native_cursor_manager.h
+++ b/ash/wm/ash_native_cursor_manager.h
@@ -11,25 +11,17 @@
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/strings/string16.h"
+#include "ui/display/display.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/wm/core/native_cursor_manager.h"
 #include "ui/wm/core/native_cursor_manager_delegate.h"
 
-namespace ui {
-class ImageCursors;
-}
-
 namespace ash {
 
-namespace test {
-class CursorManagerTestApi;
-}
-
-// This does the ash-specific setting of cursor details like cursor
-// visibility. It communicates back with the CursorManager through the
-// NativeCursorManagerDelegate interface, which receives messages about what
-// changes were acted on.
+// Ash specific extensions to NativeCursorManager. This lets us switch whether
+// we're using the native cursor, along with exposing additional data about how
+// we're going to render cursors.
 class ASH_EXPORT AshNativeCursorManager : public ::wm::NativeCursorManager {
  public:
   AshNativeCursorManager();
@@ -39,31 +31,13 @@ class ASH_EXPORT AshNativeCursorManager : public ::wm::NativeCursorManager {
   // The native cursor is enabled by default. When disabled, we hide the native
   // cursor regardless of visibility state, and let CursorWindowManager draw
   // the cursor.
-  void SetNativeCursorEnabled(bool enabled);
-
- private:
-  friend class test::CursorManagerTestApi;
+  virtual void SetNativeCursorEnabled(bool enabled) = 0;
 
-  // Overridden from ::wm::NativeCursorManager:
-  void SetDisplay(const display::Display& display,
-                  ::wm::NativeCursorManagerDelegate* delegate) override;
-  void SetCursor(gfx::NativeCursor cursor,
-                 ::wm::NativeCursorManagerDelegate* delegate) override;
-  void SetVisibility(bool visible,
-                     ::wm::NativeCursorManagerDelegate* delegate) override;
-  void SetCursorSet(ui::CursorSetType cursor_set,
-                    ::wm::NativeCursorManagerDelegate* delegate) override;
-  void SetMouseEventsEnabled(
-      bool enabled,
-      ::wm::NativeCursorManagerDelegate* delegate) override;
-
-  // The cursor location where the cursor was disabled.
-  gfx::Point disabled_cursor_location_;
-
-  bool native_cursor_enabled_;
-
-  std::unique_ptr<ui::ImageCursors> image_cursors_;
+  // Returns the scale and rotation of the currently loaded cursor.
+  virtual float GetScale() const = 0;
+  virtual display::Display::Rotation GetRotation() const = 0;
 
+ private:
   DISALLOW_COPY_AND_ASSIGN(AshNativeCursorManager);
 };