Adding tracing and gtest pretty printing support to TestPendingTask.

base/test/test_pending_task.h

Index: base/test/test_pending_task.h
diff --git a/base/test/test_pending_task.h b/base/test/test_pending_task.h
index 024e281a8d299ab357e668f61a889c48de6f4ee0..fa06800553c7fa233a7ca9dc40313e73ffacea49 100644
--- a/base/test/test_pending_task.h
+++ b/base/test/test_pending_task.h
@@ -5,7 +5,10 @@
 #ifndef BASE_TEST_TEST_PENDING_TASK_H_
 #define BASE_TEST_TEST_PENDING_TASK_H_
 
+#include <string>
+
 #include "base/callback.h"
+#include "base/debug/trace_event_argument.h"
 #include "base/location.h"
 #include "base/time/time.h"
 
@@ -51,8 +54,19 @@ struct TestPendingTask {
   TimeTicks post_time;
   TimeDelta delay;
   TestNestability nestability;
+
+  // Functions for using test pending task with tracing, useful in unit
+  // testing.
+  void AsValueInto(base::debug::TracedValue* state) const;
+  scoped_refptr<base::debug::ConvertableToTraceFormat> AsValue() const;
+  std::string ToString() const;
 };
 
+// gtest helpers which allow pretty printing of the tasks, very useful in unit
+// testing.
+std::ostream& operator<<(std::ostream& os, const TestPendingTask& task);
+void PrintTo(const TestPendingTask& task, std::ostream* os);
+
 }  // namespace base
 
-#endif  // BASE_TEST_TEST_TASK_RUNNER_H_
+#endif  // BASE_TEST_TEST_PENDING_TASK_H_