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

third_party/WebKit/Source/platform/scheduler/base/queueing_time_estimator_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/scheduler/base/queueing_time_estimator.h"
 #include "platform/scheduler/base/test_time_source.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
@@ skipping 142 matching lines @@
                                          base::TimeDelta::FromSeconds(5));
   base::TimeTicks time;
   time += base::TimeDelta::FromMilliseconds(5000);
   estimator.OnTopLevelTaskStarted(time);
   estimator.OnTopLevelTaskCompleted(time);
 
   time += base::TimeDelta::FromMilliseconds(3000);
 
   estimator.OnTopLevelTaskStarted(time);
   time += base::TimeDelta::FromMilliseconds(20000);
-  estimator.OnBeginNestedMessageLoop();
+  estimator.OnBeginNestedRunLoop();
   estimator.OnTopLevelTaskCompleted(time);
 
   // Perform an additional task after the nested message loop. A 1 second task
   // in a 5 second window results in a 100ms expected queueing time.
   estimator.OnTopLevelTaskStarted(time);
   time += base::TimeDelta::FromMilliseconds(1000);
   estimator.OnTopLevelTaskCompleted(time);
 
   // Flush the data by adding a task in the next window.
   time += base::TimeDelta::FromMilliseconds(5000);
@@ skipping 44 matching lines @@
                                    base::TimeDelta::FromMilliseconds(0),
                                    base::TimeDelta::FromMilliseconds(0),
                                    base::TimeDelta::FromMilliseconds(0),
                                    base::TimeDelta::FromMilliseconds(0),
                                    base::TimeDelta::FromMilliseconds(0),
                                    base::TimeDelta::FromMilliseconds(100)));
 }
 
 }  // namespace scheduler
 }  // namespace blink