Refactor make_computed_style_base.py Field class to link to a Group.
In make_computed_style_base.py:
- A field should know what Group it's in.
- A group should know what fields it has.
However, there is a circular dependency here. Previously, this has
been resolved by storing duplicate Group information in Field, so that
we can retrieve the necessary group information from Field, but not the
actual Group instance.
As we store more information on Groups, more duplicate information need
to be stored in Field, which makes this current solution ugly. A better
approach would be to store a reference to the actual Group instance in
Field.
This patch makes it so that when we create a Group with a set of fields,
we link the corresponding fields back to the Group.
This patch doesn't change behaviour nor generated code.
BUG=628043
Review-Url: https://codereview.chromium.org/2938553002
Cr-Commit-Position: refs/heads/master@{#478920}
4 files changed
