[Merge] lp:~mardy/webbrowser-app/cookie-domain into lp:webbrowser-app

[Olivier Tilloy]

The code looks good to me overall.

One thing though: it looks like OxideCookieHelperTest::testSetCookiesSanity() is incomplete. The setNetworkCookiesCalled signal spy is not used.

And a question: how could we move this code to oxide (as you suggest in the description), and why not implement it there in the first place?
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https://code.launchpad.net/~mardy/webbrowser-app/cookie-domain/+merge/235144
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