add tool to check that deferred libraries contain the expected code

add tool to check that deferred libraries contain the expected code

BUG=
R=sigmund@google.com

Committed: https://github.com/dart-lang/dart2js_info/commit/95d244963f85bcc6b6dacdda07329b7081b6f1a1

[Harry Terkelsen, 2015-10-28 17:22:43]

het@google.com changed reviewers:
+ sigmund@google.com

[Siggi Cherem (dart-lang), 2015-10-28 19:57:47]

lgtm

https://codereview.chromium.org/1425953002/diff/1/bin/deferred_library_check....
File bin/deferred_library_check.dart (right):

https://codereview.chromium.org/1425953002/diff/1/bin/deferred_library_check....
bin/deferred_library_check.dart:89: if (!packages.containsKey(packageName)) {
might be worth adding a TODO to mention that we don't like this default :)

https://codereview.chromium.org/1425953002/diff/1/pubspec.yaml
File pubspec.yaml (right):

https://codereview.chromium.org/1425953002/diff/1/pubspec.yaml#newcode15
pubspec.yaml:15: quiver: ^0.21.0
not sure if we already have it in DEPS, but I wonder if we should include it
when we roll this to the SDK. It's interesting because technically the SDK will
be fine without it: this is not used by the library we consume in dart2js. Since
we can't distinguish between bin_dependencies and lib_dependencies, it might be
useful to roll it just to be in sync with the pubspec files.

[Harry Terkelsen, 2015-10-28 20:49:29]

https://codereview.chromium.org/1425953002/diff/1/bin/deferred_library_check....
File bin/deferred_library_check.dart (right):

https://codereview.chromium.org/1425953002/diff/1/bin/deferred_library_check....
bin/deferred_library_check.dart:89: if (!packages.containsKey(packageName)) {
On 2015/10/28 19:57:47, Siggi Cherem (dart-lang) wrote:
> might be worth adding a TODO to mention that we don't like this default :)

Done.

https://codereview.chromium.org/1425953002/diff/1/pubspec.yaml
File pubspec.yaml (right):

https://codereview.chromium.org/1425953002/diff/1/pubspec.yaml#newcode15
pubspec.yaml:15: quiver: ^0.21.0
On 2015/10/28 19:57:47, Siggi Cherem (dart-lang) wrote:
> not sure if we already have it in DEPS, but I wonder if we should include it
> when we roll this to the SDK. It's interesting because technically the SDK
will
> be fine without it: this is not used by the library we consume in dart2js.
Since
> we can't distinguish between bin_dependencies and lib_dependencies, it might
be
> useful to roll it just to be in sync with the pubspec files.

quiver 0.21.4 is already in the SDK

[Harry Terkelsen, 2015-10-28 20:49:52]

Committed patchset #2 (id:20001) manually as
95d244963f85bcc6b6dacdda07329b7081b6f1a1 (presubmit successful).