Use platform's device scale factor for cursor

ui/base/cursor/cursor_loader.h

Index: ui/base/cursor/cursor_loader.h
diff --git a/ui/base/cursor/cursor_loader.h b/ui/base/cursor/cursor_loader.h
index 8526e29d3e580491fcbf0eccd6cb67401e011715..d4a0c3d2da00a1a8c36b41a103983ac91b06b335 100644
--- a/ui/base/cursor/cursor_loader.h
+++ b/ui/base/cursor/cursor_loader.h
@@ -16,17 +16,15 @@ namespace ui {
 
 class UI_BASE_EXPORT CursorLoader {
  public:
-  CursorLoader() : scale_(1.f) {}
+  CursorLoader() : scale_(1.f), rotation_(gfx::Display::ROTATE_0) {}
   virtual ~CursorLoader() {}
 
-  // Returns the display the loader loads images for.
-  const gfx::Display& display() const {
-    return display_;
+  gfx::Display::Rotation rotation() const {
+    return rotation_;
   }
 
-  // Sets the display the loader loads images for.
-  void set_display(const gfx::Display& display) {
-    display_ = display;
+  void set_rotation(gfx::Display::Rotation rotation) {
+    rotation_ = rotation;
   }
 
   // Returns the current scale of the mouse cursor icon.
@@ -64,12 +62,12 @@ class UI_BASE_EXPORT CursorLoader {
   static CursorLoader* Create();
 
  private:
-  // The display the loader loads images for.
-  gfx::Display display_;
-
   // The current scale of the mouse cursor icon.
   float scale_;
 
+  // The current rotation of the mouse cursor icon.
+  gfx::Display::Rotation rotation_;
+
   DISALLOW_COPY_AND_ASSIGN(CursorLoader);
 };