We can now pass in a context to `isAllowedInES2,` and it will return
true if the context supports the type. That is, ES2 types always return
true; non-ES2 types return true if the context is not strict-ES2.
Also, renamed `allowedInES2` to `isAllowedInES2` to better match similar
methods in Type.
Change-Id: Ia108bbde1354f6a14df05e8fb05742f04eefc375
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/455661
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
95a6610142