Dropped methods and properties in Flash CC
The following methods and properties for existing objects are dropped in Flash Professional CC:
document.drawingLayer but not fl.drawingLayer
drawingLayer could not be completely removed, because it is used for creating a custom tools, like this - ( http://sixsided.org/2013-06-03/ ) OR ( https://creative.adobe.com/addons/products/1911 )
also if drawingLayer would be completely removed, he would not be defined in the code editor flash CC -
i see your point, but i don't think it's supported.
you can use the document class to draw shapes and lines:
Adds a new path between two points.
Adds a new Oval object in the specified bounding rectangle.
Adds a new oval primitive fitting into the specified bounds.
Adds a new rectangle primitive fitting into the specified bounds.