Add language/extension_methods/static_extension_resolution_7_test.dart,
testing that the inference of a type argument to an extension method
invocation treats bounded type variables and promoted type variables
as specified, and as discussed in language issue #1182.
Change-Id: I99f358eb82dcce235edb091bc2bae172c2725d39
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/165022
Commit-Queue: Erik Ernst <eernst@google.com>
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
Erik Ernst
cd280a3f26