[Gardening Tool] Allow filtering groups by names in current_summary.dart

[Gardening Tool] Allow filtering groups by names in current_summary.dart

R=johnniwinther@google.com

Committed: https://github.com/dart-lang/sdk/commit/b5aeeb5b258e218d82a9f83fb500d6310d6899cf

[Dmitry Stefantsov, 2017-08-02 12:52:51]

dmitryas@google.com changed reviewers:
+ johnniwinther@google.com

[Dmitry Stefantsov, 2017-08-02 12:52:51]

As a first step in enhancing current_summary.dart I added this simple filtering
technique.  Now I'm able to get results from some groups faster during the
manual testing of the tool.

[Johnni Winther, 2017-08-02 13:39:08]

lgtm

https://codereview.chromium.org/2989263002/diff/1/tools/gardening/bin/current...
File tools/gardening/bin/current_summary.dart (right):

https://codereview.chromium.org/2989263002/diff/1/tools/gardening/bin/current...
tools/gardening/bin/current_summary.dart:47: help: "Restricts the build
groups\n"
Remove '\n' - I think `argParser.usage` inserts needed newlines (do test!)

[Dmitry Stefantsov, 2017-08-02 14:48:40]

Thank you for the review, Johnni!  Please, find my responses below.

https://codereview.chromium.org/2989263002/diff/1/tools/gardening/bin/current...
File tools/gardening/bin/current_summary.dart (right):

https://codereview.chromium.org/2989263002/diff/1/tools/gardening/bin/current...
tools/gardening/bin/current_summary.dart:47: help: "Restricts the build
groups\n"
On 2017/08/02 13:39:07, Johnni Winther wrote:
> Remove '\n' - I think `argParser.usage` inserts needed newlines (do test!)

Just tested that.  Unfortunately, it doesn't insert the newlines :(  On the
bright side, it handles '\n' quite nicely, preserving the alignment of the text
block with the explanation of the command line option like this:

```
    --group            Restricts the build groups
                       to be searched for the results of the given test
                       to those containing the given substring, case
insensitive.
```

[Dmitry Stefantsov, 2017-08-02 14:49:11]

Description was changed from

==========
[Gardening Tool] Allow filtering groups by names in current_summary.dart
==========

to

==========
[Gardening Tool] Allow filtering groups by names in current_summary.dart

R=johnniwinther@google.com

Committed:
https://github.com/dart-lang/sdk/commit/b5aeeb5b258e218d82a9f83fb500d6310d6899cf
==========

[Dmitry Stefantsov, 2017-08-02 14:49:12]

Committed patchset #1 (id:1) manually as
b5aeeb5b258e218d82a9f83fb500d6310d6899cf (presubmit successful).