Index: base/debug/trace_event_impl.h |
diff --git a/base/debug/trace_event_impl.h b/base/debug/trace_event_impl.h |
index 58a44dabf0ef0c5665163bc27ab5436beb417c76..f405e00116463b52bb53e00946c40cfd58ebb1a6 100644 |
--- a/base/debug/trace_event_impl.h |
+++ b/base/debug/trace_event_impl.h |
@@ -217,6 +217,8 @@ class BASE_EXPORT TraceLog { |
// on-demand. |
class EnabledStateChangedObserver { |
public: |
+ virtual ~EnabledStateChangedObserver() { } |
+ |
// Called just before the tracing system becomes |
// enabled. TraceLog::IsEnabled will return false at this point and trace |
// macros and methods called within the observer will deadlock. |