Adding Ozone CursorLoader and necessary API functions to allow setting the cursor in SoftwareFactor…

ui/base/cursor/cursor_ozone.cc

Index: ui/base/cursor/cursor_ozone.cc
diff --git a/ui/base/cursor/cursor_mac.mm b/ui/base/cursor/cursor_ozone.cc
similarity index 88%
copy from ui/base/cursor/cursor_mac.mm
copy to ui/base/cursor/cursor_ozone.cc
index 277717dad22fc33a037324b7f843fd28b238e852..2c919e71e33992cfde54c565ac78dd0b5c326d2f 100644
--- a/ui/base/cursor/cursor_mac.mm
+++ b/ui/base/cursor/cursor_ozone.cc
@@ -7,11 +7,9 @@
 namespace ui {
 
 void Cursor::RefCustomCursor() {
-  // TODO(macguru):
 }
 
 void Cursor::UnrefCustomCursor() {
-  // TODO(macguru):
 }
 
 }  // namespace ui