tree 3e02d48b8fe697ed6c973f23b28ea2729d848da2
parent 56a7dacd462f8bd8a4bf3c8d5dfe63ae8301b993
author Greg Spencer <gspencergoog@users.noreply.github.com> 1592343665 -0700
committer GitHub <noreply@github.com> 1592343665 -0700
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Remove dependency on package:collection by moving mergeSort into foundation/collections.dart (#59521)

This removes a dependency from Flutter (package:collection) by copying the implementation of mergeSort into Flutter's foundation/collections.dart.

Also, removed a reference to UnmodifiableSetView from the shortcuts code by just returning a copy instead.