Update print jobs appropriately in the print settings.

- Always use a fresh print job as once the print job goes away it cannot
  be read. Before we were stuck with the last state which might not been
  the last state
- make loaders relative to fragment to avoid loader id duplications with
  other ids of the activity.

Fixes: 28315242
Change-Id: I57eeb64b44b5d77b2092c22b175407131f7baf97

src/com/android/settings/print/PrintSettingsFragment.java

@@ -115,12 +115,10 @@ public class PrintSettingsFragment extends ProfileSettingsPreferenceFragment
         getPreferenceScreen().removePreference(mActivePrintJobsCategory);
 
         mPrintJobsController = new PrintJobsController();
-        getActivity().getLoaderManager().initLoader(LOADER_ID_PRINT_JOBS_LOADER, null,
-                mPrintJobsController);
+        getLoaderManager().initLoader(LOADER_ID_PRINT_JOBS_LOADER, null, mPrintJobsController);
 
         mPrintServicesController = new PrintServicesController();
-        getActivity().getLoaderManager().initLoader(LOADER_ID_PRINT_SERVICES, null,
-                mPrintServicesController);
+        getLoaderManager().initLoader(LOADER_ID_PRINT_SERVICES, null, mPrintServicesController);
     }
 
     @Override
@@ -294,7 +292,7 @@ public class PrintSettingsFragment extends ProfileSettingsPreferenceFragment
         @Override
         public Loader<List<PrintJobInfo>> onCreateLoader(int id, Bundle args) {
             if (id == LOADER_ID_PRINT_JOBS_LOADER) {
-                return new PrintJobsLoader(getActivity());
+                return new PrintJobsLoader(getContext());
             }
             return null;
         }