[epiphany] Don't accidentally delete adblock filters

[Michael Catanzaro <mcatanzaro src gnome org>]

commit fecf8df7fc4ed689dad366de9057a3121c1ac363
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Thu Aug 21 17:52:28 2014 -0500

    Don't accidentally delete adblock filters
    
    The uri-tester is created from the web extension. When created, it opens
    ~/.config/epiphany/adblock/filters.list for reading in
    uri_tester_load_filters(), then calls uri_tester_set_filters() with the
    read filters. uri_tester_set_filters() unconditionally calls
    uri_tester_save_filters(), so we immediately write back what we read to
    filters.list. But this is racy: if you are starting multiple web
    processes at the same time, such as when opening epiphany with multiple
    saved tabs, then one process may open the file for reading after another
    has opened it for writing (which clears the file) but before the filters
    have been written back to the file, so now one UriTester instance has an
    empty list of filters, and it will immediately write back that empty list.
    
    The original list is completely doomed because the only time we ever
    write to filters.list is immediately after the filters are read, since
    we do not support modifying filters. That's right, these writes are
    NEVER necessary, so let's just remove them completely so we can be
    completely sure the problem is gone.
    
    Now we have an ununsued uri_tester_save_filters() function, but I don't
    want to get rid of it quite yet as I do want to support at least a
    couple different types of filters in the future (for tracking
    protection). Also, there are already other unused functions here as
    well, so one more is no difference for now, but refactor is imminent.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=697329

 embed/uri-tester.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/embed/uri-tester.c b/embed/uri-tester.c
index eebd7b6..7c3944c 100644
--- a/embed/uri-tester.c
+++ b/embed/uri-tester.c
@@ -934,9 +934,7 @@ uri_tester_set_filters (UriTester *tester, GSList *filters)
       g_slist_free (priv->filters);
     }
 
-  /* Update private variable and save to disk. */
   priv->filters = filters;
-  uri_tester_save_filters (tester);
 }
 
 GSList *