Assert sequence validity on non-thread-safe RefCount manipulations (2)

base/at_exit.cc

Index: base/at_exit.cc
diff --git a/base/at_exit.cc b/base/at_exit.cc
index 5dcc83cb2f5c390ab8cdbc19ba601ec3fd01ab0b..e0025ea0d3b3dd96f821d8a624cd51aaee5d0a6b 100644
--- a/base/at_exit.cc
+++ b/base/at_exit.cc
@@ -81,6 +81,10 @@ void AtExitManager::ProcessCallbacksNow() {
     g_top_manager->processing_callbacks_ = true;
   }
 
+  // Relax the cross-thread access restriction to non-thread-safe RefCount.
+  // It's safe since all other threads should be terminated at this point.
+  ScopedAllowCrossThreadRefCountAccess allow_cross_thread_ref_count_access;
+
   while (!tasks.empty()) {
     base::Closure task = tasks.top();
     task.Run();