tree fa268b4463f22166b251683926615c757128517b
parent b930ae19b14d6baf82683de6f887be13f50ef9f5
author Paul Berry <paulberry@google.com> 1527803886 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1527803886 +0000

Remove _explicitTypeParameters and substitute4 from FunctionTypeImpl.

substitute4 was only used by the kernel resynthesizer, which is not
being maintained at the moment (and which I believe needs to be
reworked anyhow).  With substitute4 gone, _explicitTypeParameters was
always null (except in the case of CircularFunctionTypeImpl, where it
had no effect), so we can just replace it with literal `null`.

Change-Id: I5248e0f93b9a39c55d3e4e8b62150536656608e8
Reviewed-on: https://dart-review.googlesource.com/57709
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>