TaskScheduler [5/9] Task Tracker

base/task_scheduler/task_traits.h

Index: base/task_scheduler/task_traits.h
diff --git a/base/task_scheduler/task_traits.h b/base/task_scheduler/task_traits.h
index fbd63c5f05b9eec1f026bfa6a12e3a1717a185b7..523fd137b66557e7146f1774b661b8b8e3cf6d5e 100644
--- a/base/task_scheduler/task_traits.h
+++ b/base/task_scheduler/task_traits.h
@@ -126,8 +126,14 @@ enum class ExecutionMode {
   SINGLE_THREADED,
 };
 
-// Pretty Printer for Google Test.
-void BASE_EXPORT PrintTo(const TaskPriority& task_priority, std::ostream* os);
+// Stream operators so TaskPriority and TaskShutdownBehavior can be used in
+// DCHECK statements.
+BASE_EXPORT std::ostream& operator<<(std::ostream& os,
+                                     const TaskPriority& shutdown_behavior);
+
+BASE_EXPORT std::ostream& operator<<(
+    std::ostream& os,
+    const TaskShutdownBehavior& shutdown_behavior);
 
 }  // namespace base