Channel injection as app.channel Twig variable fails after upgrade to Symfony 2.7

Description

GlobalVariables.php is replaced by Symfony\Bridge\Twig\AppVariable.php in Symfony 2.7

integrated-content-bundle\DependencyInjection\Compiler\TemplatingPass.php has to be changed

Problem: $container is protected in the new class and removed in Symfony 3.0

If you need more details please ask the Reporter of this issue

Deployment actions

Replace app.channel with _channel

Technical tasks

None
Done

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Unassigned

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External issue ID

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Min. hours

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Dev hour estimate

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Fix versions