Add "point of interest" app for command-line testing of dart2js type information.

Add "point of interest" app for command-line testing of dart2js type information.

For now, the app only prints the location of an offset given at command line.

Example usage:

dart -p$BUILD_DIRECTORY/ReleaseIA32/packages/ poi.dart DART_FILE OFFSET

R=kasperl@google.com

Committed: https://code.google.com/p/dart/source/detail?r=38114

[ahe, 2014-07-10 08:36:07]

Adding a new app that does virtually nothing.

But it is enough to set up testing, and this revealed that I need to distinguish
between browser and command-line (aka server) tests.

https://codereview.chromium.org/386563002/diff/40001/dart/tests/compiler/dart...
File dart/tests/compiler/dart2js/memory_compiler.dart (left):

https://codereview.chromium.org/386563002/diff/40001/dart/tests/compiler/dart...
dart/tests/compiler/dart2js/memory_compiler.dart:128: Uri script =
Uri.base.resolveUri(Platform.script);
Unrelated change, but I noticed this unused variable as I was copying code from
this file to poi.dart.

[kasperl, 2014-07-10 09:27:07]

LGTM.

https://codereview.chromium.org/386563002/diff/40001/dart/tests/try/poi/poi_t...
File dart/tests/try/poi/poi_test.dart (right):

https://codereview.chromium.org/386563002/diff/40001/dart/tests/try/poi/poi_t...
dart/tests/try/poi/poi_test.dart:13:
poi.main(<String>[Platform.script.toFilePath(), '339']);
Is there any way you could make this check something -- even if it's trivial?

[ahe, 2014-07-10 10:35:23]

https://codereview.chromium.org/386563002/diff/40001/dart/tests/try/poi/poi_t...
File dart/tests/try/poi/poi_test.dart (right):

https://codereview.chromium.org/386563002/diff/40001/dart/tests/try/poi/poi_t...
dart/tests/try/poi/poi_test.dart:13:
poi.main(<String>[Platform.script.toFilePath(), '339']);
On 2014/07/10 09:27:07, kasperl wrote:
> Is there any way you could make this check something -- even if it's trivial?

Done.

[ahe, 2014-07-10 10:38:09]

Committed patchset #2 manually as r38114 (presubmit successful).