scheduler: Detect load RAIL mode

third_party/WebKit/Source/platform/testing/TestingPlatformSupport.h

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 73 matching lines @@
   void postNonNestableIdleTask(const WebTraceLocation&,
                                WebThread::IdleTask*) override {}
   std::unique_ptr<WebViewScheduler> createWebViewScheduler(
       InterventionReporter*) override {
     return nullptr;
   }
   void suspendTimerQueue() override {}
   void resumeTimerQueue() override {}
   void addPendingNavigation(WebScheduler::NavigatingFrameType) override {}
   void removePendingNavigation(WebScheduler::NavigatingFrameType) override {}
-  void onNavigationStarted() override {}
 
  private:
   WTF::Deque<std::unique_ptr<WebTaskRunner::Task>> m_tasks;
   std::unique_ptr<TestingPlatformMockWebTaskRunner> m_mockWebTaskRunner;
 };
 
 class TestingPlatformSupport : public Platform {
   WTF_MAKE_NONCOPYABLE(TestingPlatformSupport);
 
  public:
@@ skipping 84 matching lines @@
       m_discardableMemoryAllocator;
   std::unique_ptr<DummyPlatform> m_platform;
   std::unique_ptr<cc_blink::WebCompositorSupportImpl> m_compositorSupport;
   TestingPlatformSupport::Config m_testingPlatformConfig;
   std::unique_ptr<TestingPlatformSupport> m_testingPlatformSupport;
 };
 
 }  // namespace blink
 
 #endif  // TestingPlatformSupport_h