Revert 110555 - sync: Remove ModelNeutralExecuteImpl()

chrome/browser/sync/engine/process_updates_command.cc

Index: chrome/browser/sync/engine/process_updates_command.cc
===================================================================
--- chrome/browser/sync/engine/process_updates_command.cc	(revision 110571)
+++ chrome/browser/sync/engine/process_updates_command.cc	(working copy)
@@ -26,6 +26,15 @@
 ProcessUpdatesCommand::ProcessUpdatesCommand() {}
 ProcessUpdatesCommand::~ProcessUpdatesCommand() {}
 
+bool ProcessUpdatesCommand::ModelNeutralExecuteImpl(SyncSession* session) {
+  const GetUpdatesResponse& updates =
+      session->status_controller()->updates_response().get_updates();
+  const int update_count = updates.entries_size();
+
+  // Don't bother processing updates if there were none.
+  return update_count != 0;
+}
+
 void ProcessUpdatesCommand::ModelChangingExecuteImpl(SyncSession* session) {
   syncable::ScopedDirLookup dir(session->context()->directory_manager(),
                                 session->context()->account_name());