Remove CCProtectedNode.h/.cpp from ui/base to 2d and modify the related project setting
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_new_module
Merge pull request #7627 from andyque/fixScale9Sprite

refactor ui::widgets to use ui::Scale9Sprite instead of extension::Scale9Sprite
Merge pull request #7635 from samuele3hu/v3_new_module

Remove CCProtectedNode.h/.cpp from ui/base to 2d and modify the related project setting