The class `VariableModel` is renamed to `PromotionModel` to reflect
that it tracks promotion information for both local variables and
fields. Variables and fields that map from a promotion key to an
instance of `PromotionModel` are renamed from `variableInfo` to
`promotionInfo`.
Also a few comments are re-worded to make them clearer.
There is no functional change--this is a rename-only CL.
Change-Id: Ie0e7147d290171407f31fe65af85ce96dd51694a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/321362
Reviewed-by: Phil Quitslund <pquitslund@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>
Paul Berry
b9adb3d398