cleanup to status_reporter

cleanup to status_reporter

Infer build architectures from combinations
Print build command
Fix comments

R=ricow@google.com

Committed: https://code.google.com/p/dart/source/detail?r=43016

[kevmoo, 2015-01-19 23:56:08]

kevmoo@google.com changed reviewers:
+ ricow@google.com

[ricow1, 2015-01-20 06:15:05]

lgtm, thanks

https://codereview.chromium.org/860723002/diff/1/tools/testing/dart/status_re...
File tools/testing/dart/status_reporter.dart (right):

https://codereview.chromium.org/860723002/diff/1/tools/testing/dart/status_re...
tools/testing/dart/status_reporter.dart:102: print(args.join(' '));
print('Running: python ${args.join(" ")}');

https://codereview.chromium.org/860723002/diff/1/tools/testing/dart/status_re...
tools/testing/dart/status_reporter.dart:137: var arches = new Set<String>();
something like:
var arches = combinations.fold(new Set<String>(), (set, value) =>
set.addAll(value));

https://codereview.chromium.org/860723002/diff/1/tools/testing/dart/status_re...
tools/testing/dart/status_reporter.dart:162: // Everything after will the
JSON-formatted output
. at end of comment, consider also saying "because of the --report-in-json flag
used above."

[kevmoo, 2015-01-20 16:48:10]

https://codereview.chromium.org/860723002/diff/1/tools/testing/dart/status_re...
File tools/testing/dart/status_reporter.dart (right):

https://codereview.chromium.org/860723002/diff/1/tools/testing/dart/status_re...
tools/testing/dart/status_reporter.dart:102: print(args.join(' '));
On 2015/01/20 06:15:05, ricow1 wrote:
> print('Running: python ${args.join(" ")}');

Done.

https://codereview.chromium.org/860723002/diff/1/tools/testing/dart/status_re...
tools/testing/dart/status_reporter.dart:137: var arches = new Set<String>();
On 2015/01/20 06:15:05, ricow1 wrote:
> something like:
> var arches = combinations.fold(new Set<String>(), (set, value) =>
> set.addAll(value));

Done.

https://codereview.chromium.org/860723002/diff/1/tools/testing/dart/status_re...
tools/testing/dart/status_reporter.dart:162: // Everything after will the
JSON-formatted output
On 2015/01/20 06:15:05, ricow1 wrote:
> . at end of comment, consider also saying "because of the --report-in-json
flag
> used above."

Done.

[kevmoo, 2015-01-20 16:49:09]

Committed patchset #3 (id:40001) manually as 43016 (presubmit successful).