Replaced JsZip with Dart package:archive.

Replaced JsZip with Dart package:archive.

Now the submodule for JsZip has been removed, as has the need for any
JavaScript code (except the background page). Therefore the jsProxy and
the .o hackery has been cleaned up.

Also now the code requests tar.gz files from the server instead of
uncompressed zip files. I've tested that now tavern works perfectly
with the pub server. Addition permissions were added to the manifest
file so that downloading from pub is working.

R=tapted@chromium.org

Committed: https://github.com/tapted/bleeding_edge/commit/88b5f9a

[pajamallama, 2014-01-28 23:52:43]

This package is **awesome**.

[tapted, 2014-01-29 00:14:25]

lgtm

https://codereview.appspot.com/58050043/diff/1/.gitmodules
File .gitmodules (left):

https://codereview.appspot.com/58050043/diff/1/.gitmodules#oldcode1
.gitmodules:1: [submodule "dart/sdk/lib/_internal/pub/js/jszip"]
I think this is leaving an empty file behind - can we just `rm` it?

https://codereview.appspot.com/58050043/diff/1/dart/sdk/lib/_internal/pub/lib...
File dart/sdk/lib/_internal/pub/lib/src/source/hosted.dart (right):

https://codereview.appspot.com/58050043/diff/1/dart/sdk/lib/_internal/pub/lib...
dart/sdk/lib/_internal/pub/lib/src/source/hosted.dart:106: }).then((archive) =>
dest.extractArchive(archive)).then((_) => true);
nit: align the `.then`s vertically?

[pajamallama, 2014-01-29 00:26:09]

https://codereview.appspot.com/58050043/diff/1/.gitmodules
File .gitmodules (left):

https://codereview.appspot.com/58050043/diff/1/.gitmodules#oldcode1
.gitmodules:1: [submodule "dart/sdk/lib/_internal/pub/js/jszip"]
On 2014/01/29 00:14:25, tapted wrote:
> I think this is leaving an empty file behind - can we just `rm` it?

Done.

https://codereview.appspot.com/58050043/diff/1/dart/sdk/lib/_internal/pub/lib...
File dart/sdk/lib/_internal/pub/lib/src/source/hosted.dart (right):

https://codereview.appspot.com/58050043/diff/1/dart/sdk/lib/_internal/pub/lib...
dart/sdk/lib/_internal/pub/lib/src/source/hosted.dart:106: }).then((archive) =>
dest.extractArchive(archive)).then((_) => true);
On 2014/01/29 00:14:25, tapted wrote:
> nit: align the `.then`s vertically?

Done.

[pajamallama, 2014-01-29 00:27:48]

Committed patchset #2 manually as r88b5f9a.