This CL also removes the `VariableExpression` class that was briefly
added in a prior CL. This class was intended to support cloning an
expression while changing the refKind of a VariableReference inside of
the expression, but it added state and complexity. In this CL, rather
than track this via extra state, the inliner just recurses into the
expression as needed to find its VariableReference. Since most relevant
expressions are just a VariableReference anyway, this is inexpensive.
Change-Id: Id4d926b7d7520b5e6ce455446c05a6d59ef62a84
Bug: skia:10756
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/319917
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
