def _SetClientId(self, client_id):
    self.additional_headers['X-Gdata-Client'] = client_id
Sets the Factory to appear as if it has successfully logged into a site.
dataset/ETHPy150Open acil-bwh/SlicerCIP/Scripted/attic/PicasaSnap/gdata/youtube/service.py/YouTubeService._SetClientId--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/test/client.py/Client.login