Add webstorePrivate API for installing bundles of extensions.

Add webstorePrivate API for installing bundles of extensions.

Adds an extension API that lets the webstore app install bundles of extensions. The WebstoreBundle class manages the installation life cycle of extension bundles.

Note: the UI will be in separate CLs.

BUG=98687
TEST=*Webstore*

[jstritar, 2011-10-25 16:38:38]

The rest of the bundles code, excluding UI.

I'm working on a unit test for the WebstoreBundle, but it'd be great if I could
land that separately if not done by the time this is reviewed, since there are a
few more follow up CLs.

A browser test is tough because we rely on the redirect webstore's redirect
behavior for downloads, and I don't think we can do that with the mock host
resolver right now.

[jstritar, 2011-10-25 18:46:35]

Added a test for WebstoreBundle to approve / deny state transitions and a few
other methods on it.

[jstritar, 2011-10-25 19:25:14]

+aa

[Mihai Parparita -not on Chrome, 2011-10-25 20:12:47]

On Tue, Oct 25, 2011 at 9:38 AM, <jstritar@chromium.org> wrote:

> A browser test is tough because we rely on the redirect webstore's redirect
> behavior for downloads, and I don't think we can do that with the mock host
> resolver right now.
>

Do we actually rely on the redirect behavior? Seems like this should work
even if the download URL doesn't result in a redirect (i.e. where original
URL == final URL). There's a few browser tests that override the download
URL flag to test download behavior:

http://www.google.com/codesearch#search/&q=kAppsGalleryUpdateURL%20file:test&...

Mihai

[jstritar_google, 2011-10-25 20:13:46]

Actually, good point. The redirect is just for the user's convenience and this
shouldn't rely on it.

[jstritar, 2011-10-26 18:40:27]

I added a browser test for WebstoreBundle, so I think this is ready to go.

Is it okay to include the packaged .crx files in this case? I did this because
we place generated crx files in a tmp directory but the default test server's
document root is in the chrome tree. Also, we'll almost never change these
extensions, since all we care about is them being installed.

[jstritar, 2011-10-27 22:26:38]

I got rid of the two step API. This simplified things a bit since we no longer
need WebstorePendingInstalls.