There are no functional changes, just changes to the way the logging
functionality is implemented. The motivation for the changes is to
allow future CLs to explore ways of changing the expectations so that
async handling of messages won't produce flaky tests.
All references to the 'messageLog' outside the class have been replaced
by higher-level methods with a semantic meaning.
The class has been split into an interface and an implementation, which
allows the test-specific aspects to be in the `test` directory.
Some additional code cleanup was also done.
Change-Id: Ie515f71153a96fb6e92eb8e2eb05f4b5e064bbd7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/421965
Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>
Reviewed-by: Phil Quitslund <pquitslund@google.com>
Brian Wilkerson
d85ab6df0c