Add a contextual filter setting to block views: Provide default value from content ID of parent.

Problem/Motivation

I have a one-many relationship between two content types B and C implemented as B containing an entityreference field to C.
I have a one-one relationship between content types A and B implemented as A containing a single entityreference field to B .
I am using a Drupal core block view to list nodes of type C from any node of type B with a contextual filter set to: Provide default Value (content ID from URL)
This works fine when viewing the parent node of type B from its own page.
I want to be able to specify listing nodes of type C referenced by B which is in turn referenced by a node of type A.
This is not possible using Drupal core views functionality "Provide default value (content ID from URL" and I would like to know how to list C's contained in B's contained in A's

Steps to reproduce

Create content types A, B and C
Add an one-one entityreference B to A
Add a one-many entityreference C to B
Create a view to display C nodes in B
Note it works fine when viewing B
Create a node of type A containing a reference to node type B previously created
View A and note the view breaks as the URL now references node type A not B.

Proposed resolution

Add a new option in Views contextual filters to: Provide default value (content ID from parent node) in addition to the existing "content ID from URL". This would allow arbitrary layers of nesting.

Remaining tasks

TBD

User interface changes

API changes

Data model changes

Release notes snippet