b846a20e26
* Move compare_results.dart to pkg/test_runner. * Clean up analyzer issues in compare_results.dart. * Add a test for compare_results.dart. * Fix compare and extend results to detect expectation changes. Change-Id: I451ddc2d0b01a7e5fd7c9d791b000c786c2f2c93 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/214805 Commit-Queue: Alexander Thomas <athom@google.com> Reviewed-by: William Hesse <whesse@google.com>