This prepares for https://codereview.chromium.org/1994743003/, which
moves some of these functions into the collection package. Once that
lands, we'll add a follow-up CL to use those APIs from collection.

R=jakemac@google.com

Review URL: https://codereview.chromium.org//1991303002 .

We weren't notifying the controller when all the live tests had been
added to the suite.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1981283006 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1960503002 .

R=rnystrom@google.com, jmesserly@google.com

Review URL: https://codereview.chromium.org//1921913004 .

Looks like we hadn't run the analyzer against all the top-level
libraries.

See dart-lang/matcher@400e87928fdceeee883c95c8a81e96fdacfdc399

Closes #63

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1829483002 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1801363007 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1797113002 .

This also adds the ability to pass --name or --plain-name multiple times
on the command line.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1802133002 .

Closes #83

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1782473005 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1756523003 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1731483002 .

The --tags and --exclude-tags flags now support boolean selector syntax,
as do the keys in the "tags" configuration field.

Closes #16

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1715583003 .

See #16

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1691173002 .

Closes #396

R=rnystrom@google.com

Review URL: https://codereview.chromium.org//1684063004 .

This will ensure that the latest version of test that claims to support
args 0.12.0 will actually run correctly with that version. After this is
released, I'll re-add the separators and fix the args constraint.

See #396

R=rnystrom@google.com

Review URL: https://codereview.chromium.org//1683923005 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1673493002 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1659023003 .

This adds an event that prints the total number of suites that will be
loaded, and includes the number of tests to be run in each group. This
enables a monotonic (if not entirely accurate) progress bar.

Closes #366

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1641353002 .

Closes #380

R=alexander.doroshko@gmail.com, kevmoo@google.com

Review URL: https://codereview.chromium.org//1637193003 .

Closes #279

R=lrn@google.com, kevmoo@google.com

Review URL: https://codereview.chromium.org//1604043003 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1594473002 .

Previously we were running the tearDown in parallel with the next test,
which caused some pretty bad bugs.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1580243002 .

When the browser is paused at a breakpoint, the runner will now open a
command-line console with a "restart" command that will restart the
current test.

This currently has no tests, due to dart-lang/sdk#25369 and the lack of
a programmatic API for interacting with Observatory. I've tested it
reasonably thoroughly by hand, but it's more likely than the average
feature to have lurking bugs.

Closes #335

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1561073003 .

See dart-lang/http_multi_server#1.

I'm choosing not to add a section to the README until the feature is
complete. I don't want to encourage people to use tags for long-term
testing until we support a configuration that can include the set of
valid tags.

When a group was skipped, it was being filtered out entirely since it
had no tests. This preserves it so that it can print a skip message.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1471963002 .

Closes #11

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1461293005 .

1.16 is the first version that may remove package symlinks by default,
which will break test.

Closes #360

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1463023002 .

Closes #18

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1400743002 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1395223002 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1372353003 .

Closes #313

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1369613002 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1364893004 .