Allow SequencedTaskRunnerHandle::Get() while running unsequenced tasks.

base/threading/sequenced_task_runner_handle.h

Index: base/threading/sequenced_task_runner_handle.h
diff --git a/base/threading/sequenced_task_runner_handle.h b/base/threading/sequenced_task_runner_handle.h
index 838c83efa3c7752387d737470e2f35015185b29c..7084ec4bb9bf879caad480e9393bb70d05756b43 100644
--- a/base/threading/sequenced_task_runner_handle.h
+++ b/base/threading/sequenced_task_runner_handle.h
@@ -24,8 +24,8 @@ class BASE_EXPORT SequencedTaskRunnerHandle {
   // Returns true if one of the following conditions is fulfilled:
   // a) The current thread has a ThreadTaskRunnerHandle (which includes any
   //    thread that has a MessageLoop associated with it), or
-  // b) The current thread is a worker thread belonging to a SequencedWorkerPool
-  //    *and* is currently running a sequenced task.
+  // b) The current thread is a worker thread belonging to a
+  //    SequencedWorkerPool.
   static bool IsSet();
 
  private: