[gametrailers] Use unicode_literals

Conflicts:
	youtube_dl/extractor/gametrailers.py

youtube_dl/extractor/gametrailers.py

@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 import re
 
 from .mtv import MTVServicesInfoExtractor
@@ -6,12 +8,12 @@ from .mtv import MTVServicesInfoExtractor
 class GametrailersIE(MTVServicesInfoExtractor):
     _VALID_URL = r'http://www\.gametrailers\.com/(?P<type>videos|reviews|full-episodes)/(?P<id>.*?)/(?P<title>.*)'
     _TEST = {
-        u'url': u'http://www.gametrailers.com/videos/zbvr8i/mirror-s-edge-2-e3-2013--debut-trailer',
-        u'file': u'70e9a5d7-cf25-4a10-9104-6f3e7342ae0d.mp4',
-        u'md5': u'4c8e67681a0ea7ec241e8c09b3ea8cf7',
-        u'info_dict': {
-            u'title': u'Mirror\'s Edge 2|E3 2013: Debut Trailer',
-            u'description': u'Faith is back!  Check out the World Premiere trailer for Mirror\'s Edge 2 straight from the EA Press Conference at E3 2013!',
+        'url': 'http://www.gametrailers.com/videos/zbvr8i/mirror-s-edge-2-e3-2013--debut-trailer',
+        'file': '70e9a5d7-cf25-4a10-9104-6f3e7342ae0d.mp4',
+        'md5': '4c8e67681a0ea7ec241e8c09b3ea8cf7',
+        'info_dict': {
+            'title': 'Mirror\'s Edge 2|E3 2013: Debut Trailer',
+            'description': 'Faith is back!  Check out the World Premiere trailer for Mirror\'s Edge 2 straight from the EA Press Conference at E3 2013!',
         },
     }
 
@@ -23,5 +25,5 @@ class GametrailersIE(MTVServicesInfoExtractor):
         webpage = self._download_webpage(url, video_id)
         mgid = self._search_regex([r'data-video="(?P<mgid>mgid:.*?)"',
                                    r'data-contentId=\'(?P<mgid>mgid:.*?)\''],
-                                  webpage, u'mgid')
+                                  webpage, 'mgid')
         return self._get_videos_info(mgid)