This means that when useGrowableLists is false all empty TypeParameter
lists are the same (unmodifiable) empty list.
When running dart2js in its "linker scenario" on a large internal app
this saves something along the lines of 30MB of memory.
Change-Id: Iee31016d238650de19db584a5617ca4a16889fe7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/186940
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Jens Johansen
741336e40b