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

extensions/browser/api/alarms/alarms_api_unittest.cc

 // Copyright (c) 2012 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.
 
 // This file tests the chrome.alarms extension API.
 
 #include <stddef.h>
 
 #include "base/json/json_reader.h"
+#include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/test/simple_test_clock.h"
 #include "base/values.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/test/mock_render_process_host.h"
 #include "extensions/browser/api/alarms/alarm_manager.h"
 #include "extensions/browser/api/alarms/alarms_api.h"
 #include "extensions/browser/api/alarms/alarms_api_constants.h"
 #include "extensions/browser/api_test_utils.h"
 #include "extensions/browser/api_unittest.h"
 #include "extensions/common/extension_messages.h"
 #include "ipc/ipc_test_sink.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 typedef extensions::api::alarms::Alarm JsAlarm;
 
 namespace extensions {
 
 namespace utils = api_test_utils;
 
 namespace {
 
 // Test delegate which quits the message loop when an alarm fires.
 class AlarmDelegate : public AlarmManager::Delegate {
  public:
   ~AlarmDelegate() override {}
   void OnAlarm(const std::string& extension_id, const Alarm& alarm) override {
     alarms_seen.push_back(alarm.js_alarm->name);
-    if (base::MessageLoop::current()->is_running())
+    if (base::RunLoop::IsRunningOnCurrentThread())
       base::MessageLoop::current()->QuitWhenIdle();
   }
 
   std::vector<std::string> alarms_seen;
 };
 
 }  // namespace
 
 void RunScheduleNextPoll(AlarmManager* alarm_manager) {
   alarm_manager->ScheduleNextPoll();
@@ skipping 704 matching lines @@
 
   // The next poll should be the first poll that hasn't happened and is in-line
   // with the original scheduling.
   // Last poll was at 380 seconds; next poll should be at 480 seconds.
   EXPECT_DOUBLE_EQ((alarm_manager_->last_poll_time_ +
                     base::TimeDelta::FromSeconds(100)).ToJsTime(),
                    alarm_manager_->next_poll_time_.ToJsTime());
 }
 
 }  // namespace extensions