170bda2b74
Allows developers to perform arbitrary filtering or analysis of instances, such as finding the largest strings, degreeses of duplication, histograms of various properties, etc. TEST=ci Bug: https://github.com/dart-lang/sdk/issues/44479 Change-Id: I0b4005b5778038945e5f1b2d7858806c8e0dbbff Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/176381 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Stephen Adams <sra@google.com>