Flush TaskScheduler in content::RunAllBlockingPoolTasksUntilIdle().

content/public/test/test_utils.h

Index: content/public/test/test_utils.h
diff --git a/content/public/test/test_utils.h b/content/public/test/test_utils.h
index 29f5965db9767ac191f87bf7e01ee5ba0176de60..228e099572b4d8be25eac7b12a45befbff301847 100644
--- a/content/public/test/test_utils.h
+++ b/content/public/test/test_utils.h
@@ -56,8 +56,11 @@ void RunAllPendingInMessageLoop();
 // thread.
 void RunAllPendingInMessageLoop(BrowserThread::ID thread_id);
 
-// Runs until both the blocking pool and the current message loop are empty
-// (have no more scheduled tasks) and no tasks are running.
+// Runs until the blocking pool, TaskScheduler and the current message loop are
+// empty (have no more scheduled tasks) and no tasks are running.
+//
+// TODO(fdoray): Rename to RunAllTaskSchedulerTasksUntilIdle() once the blocking
+// pool is fully deprecated. https://crbug.com/667892
 void RunAllBlockingPoolTasksUntilIdle();
 
 // Get task to quit the given RunLoop. It allows a few generations of pending