ThemeChooser: Update for Theme api changes.

Change-Id: I1edff1855ad7ce0b0394d4eee1d51bb636cefb37
TICKET: CYNGNOS-2295
diff --git a/src/org/cyanogenmod/theme/chooser/ChooserDetailFragment.java b/src/org/cyanogenmod/theme/chooser/ChooserDetailFragment.java
index 257b898..58fa2cc 100644
--- a/src/org/cyanogenmod/theme/chooser/ChooserDetailFragment.java
+++ b/src/org/cyanogenmod/theme/chooser/ChooserDetailFragment.java
@@ -221,7 +221,7 @@
 
         getLoaderManager().initLoader(LOADER_ID_THEME_INFO, null, this);
         getLoaderManager().initLoader(LOADER_ID_APPLIED_THEME, null, this);
-        mService = ThemeManager.getInstance();
+        mService = ThemeManager.getInstance(getActivity());
         return v;
     }