Move throttling of background timers into the renderer scheduler

third_party/WebKit/Source/core/workers/WorkerGlobalScope.h

 /*
  * Copyright (C) 2008, 2009 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 102 matching lines @@
     v8::Local<v8::Object> wrap(v8::Isolate*, v8::Local<v8::Object> creationContext) final;
     v8::Local<v8::Object> associateWithWrapper(v8::Isolate*, const WrapperTypeInfo*, v8::Local<v8::Object> wrapper) final;
 
     // ExecutionContextClient
     WorkerEventQueue* eventQueue() const final;
     SecurityContext& securityContext() final { return *this; }
 
     bool isContextThread() const final;
     bool isJSExecutionForbidden() const final;
 
-    double timerAlignmentInterval() const final;
     DOMTimerCoordinator* timers() final;
 
     WorkerInspectorController* workerInspectorController() { return m_workerInspectorController.get(); }
 
     bool isClosing() { return m_closing; }
 
     double timeOrigin() const { return m_timeOrigin; }
 
     WorkerClients* clients() { return m_workerClients.get(); }
 
@@ skipping 72 matching lines @@
     unsigned long m_workerExceptionUniqueIdentifier;
     WillBeHeapHashMap<unsigned long, RefPtrWillBeMember<ConsoleMessage>> m_pendingMessages;
     WillBeHeapListHashSet<RefPtrWillBeMember<V8AbstractEventListener>> m_eventListeners;
 };
 
 DEFINE_TYPE_CASTS(WorkerGlobalScope, ExecutionContext, context, context->isWorkerGlobalScope(), context.isWorkerGlobalScope());
 
 } // namespace blink
 
 #endif // WorkerGlobalScope_h