[Sync] Add support for automatic enabling of syncing tab favicons.

net/tools/testserver/testserver.py

Index: net/tools/testserver/testserver.py
diff --git a/net/tools/testserver/testserver.py b/net/tools/testserver/testserver.py
index 64619975787680a5c9a63db197cbfce70c653c8b..8de819d43c928044972ee16f2b467131f2309ec7 100755
--- a/net/tools/testserver/testserver.py
+++ b/net/tools/testserver/testserver.py
@@ -1671,6 +1671,7 @@ class SyncPageHandler(BasePageHandler):
                     self.ChromiumSyncTransientErrorOpHandler,
                     self.ChromiumSyncErrorOpHandler,
                     self.ChromiumSyncSyncTabsOpHandler,
+                    self.ChromiumSyncSyncTabFaviconsOpHandler,
                     self.ChromiumSyncCreateSyncedBookmarksOpHandler]
 
     post_handlers = [self.ChromiumSyncCommandHandler,
@@ -1871,6 +1872,18 @@ class SyncPageHandler(BasePageHandler):
     self.wfile.write(raw_reply)
     return True;
 
+  def ChromiumSyncSyncTabFaviconsOpHandler(self):
+    test_name = "/chromiumsync/synctabfavicons"
+    if not self._ShouldHandleRequest(test_name):
+      return False
+    result, raw_reply = self.server._sync_handler.HandleSetSyncTabFavicons()
+    self.send_response(result)
+    self.send_header('Content-Type', 'text/html')
+    self.send_header('Content-Length', len(raw_reply))
+    self.end_headers()
+    self.wfile.write(raw_reply)
+    return True;
+
   def ChromiumSyncCreateSyncedBookmarksOpHandler(self):
     test_name = "/chromiumsync/createsyncedbookmarks"
     if not self._ShouldHandleRequest(test_name):