This avoids virtual calls for `runtimeType` (unless the user overrides
it) and `_runtimeType` (since the internal categorization is now done
using the table instead), which saves a huge amount of space in the
global dispatch table.
It also fixes record runtime types, which now use the masqueraded
types for its fields, rather than the (possibly user-overridden)
`runtimeType`.
A masquerade case was missing for `Type`, which has been added.
Fixes https://github.com/dart-lang/sdk/issues/51134
Tested: ci + new test for overridden runtimeType
Change-Id: I1909c665ae78eb07b9c0eb22b6e8836e27495d70
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/285684
Reviewed-by: Ömer Ağacan <omersa@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Aske Simon Christensen <askesc@google.com>
Aske Simon Christensen
c19720245c