Make nesting/running states a RunLoop rather than a MessageLoop concept.

third_party/WebKit/Source/platform/scheduler/base/task_queue_manager_delegate_for_test.h

Index: third_party/WebKit/Source/platform/scheduler/base/task_queue_manager_delegate_for_test.h
diff --git a/third_party/WebKit/Source/platform/scheduler/base/task_queue_manager_delegate_for_test.h b/third_party/WebKit/Source/platform/scheduler/base/task_queue_manager_delegate_for_test.h
index 81495a487989b31432acd5c4a26d4f9a3927abcb..b666826511c9176071e9534480bb5ac2fb4515cc 100644
--- a/third_party/WebKit/Source/platform/scheduler/base/task_queue_manager_delegate_for_test.h
+++ b/third_party/WebKit/Source/platform/scheduler/base/task_queue_manager_delegate_for_test.h
@@ -21,7 +21,7 @@ class TaskQueueManagerDelegateForTest : public TaskQueueManagerDelegate {
       scoped_refptr<base::SingleThreadTaskRunner> task_runner,
       std::unique_ptr<base::TickClock> time_source);
 
-  // NestableSingleThreadTaskRunner implementation
+  // SingleThreadTaskRunner:
   bool PostDelayedTask(const tracked_objects::Location& from_here,
                        base::OnceClosure task,
                        base::TimeDelta delay) override;
@@ -29,11 +29,13 @@ class TaskQueueManagerDelegateForTest : public TaskQueueManagerDelegate {
                                   base::OnceClosure task,
                                   base::TimeDelta delay) override;
   bool RunsTasksOnCurrentThread() const override;
+
+  // TaskQueueManagerDelegate:
   bool IsNested() const override;
-  void AddNestingObserver(
-      base::MessageLoop::NestingObserver* observer) override;
-  void RemoveNestingObserver(
-      base::MessageLoop::NestingObserver* observer) override;
+  void AddNestingObserver(base::RunLoop::NestingObserver* observer) override;
+  void RemoveNestingObserver(base::RunLoop::NestingObserver* observer) override;
+
+  // TickClock:
   base::TimeTicks NowTicks() override;
 
  protected: