http: Expose core.get_uri_schemes (Fixes #361)

docs/changes.rst

@@ -49,6 +49,9 @@ v0.13.0 (in development)
 
 - Upgrade Mopidy.js' dependencies when.js from 1.6.1 to 1.8.1.
 
+- Expose :meth:`mopidy.core.Core.get_uri_schemes` to HTTP clients. It is
+  available through Mopidy.js as ``mopidy.getUriSchemes()``.
+
 **MPRIS frontend**
 
 - Publish album art URIs if available.

mopidy/frontends/http/ws.py

@@ -20,6 +20,7 @@ class WebSocketResource(object):
         self._core = core_proxy
         inspector = jsonrpc.JsonRpcInspector(
             objects={
+                'core.get_uri_schemes': core.Core.get_uri_schemes,
                 'core.library': core.LibraryController,
                 'core.playback': core.PlaybackController,
                 'core.playlists': core.PlaylistsController,
@@ -28,6 +29,7 @@ class WebSocketResource(object):
         self.jsonrpc = jsonrpc.JsonRpcWrapper(
             objects={
                 'core.describe': inspector.describe,
+                'core.get_uri_schemes': self._core.get_uri_schemes,
                 'core.library': self._core.library,
                 'core.playback': self._core.playback,
                 'core.playlists': self._core.playlists,