add 3rd party keyboard support to buchets (bug 922209)

lib/settings_base.py

@@ -1564,7 +1564,7 @@ ALLOW_TASTYPIE_SERVICES = False
 
 # The version we append to the app feature profile. Bump when we add new app
 # features to the `AppFeatures` model.
-APP_FEATURES_VERSION = 2
+APP_FEATURES_VERSION = 3
 
 # Whether to throttle API requests. Default is True. Disable where appropriate.
 API_THROTTLE = True

migrations/671-keyboard-appfeat.sql

@@ -0,0 +1,2 @@
+ALTER TABLE `addons_features`
+    ADD COLUMN `has_thirdparty_keyboard_support` bool NOT NULL;

mkt/constants/features.py

@@ -298,6 +298,12 @@ APP_FEATURES = OrderedDict([
         'apis': ('TCPSocket', 'navigator.mozTCPSocket',
                  'navigator.mozTCPServerSocket')
     }),
+    ('THIRDPARTY_KEYBOARD_SUPPORT', {
+        'name': _lazy(u'Third-Party Keyboard Support'),
+        'description': _lazy(u'The app requires the platform to support '
+                             u'third-party keyboards.'),
+        'apis': ('navigator.mozInputMethod',),
+    }),
 ])