Code review comment for lp:~fboucault/unity-2d/opengl_switch

@Ricardo: the status of a MR should not be set to Approved until all the necessary changes/fixes have been applied. This is because the buildbot is automatically merging approved MRs. The latest nightly build on ARM failed precisely because of the missing build dependency you were mentioning in your comment (see https://launchpadlibrarian.net/70884789/buildlog_ubuntu-natty-armel.unity-2d_3.8.4.1-0ubuntu2~bzr553_FAILEDTOBUILD.txt.gz).