Move throttling of background timers into the renderer scheduler

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

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009, 2011 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:
  * 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
@@ skipping 130 matching lines @@
 String WorkerGlobalScope::userAgent() const
 {
     return m_userAgent;
 }
 
 void WorkerGlobalScope::disableEval(const String& errorMessage)
 {
     m_script->disableEval(errorMessage);
 }
 
-double WorkerGlobalScope::timerAlignmentInterval() const
-{
-    return DOMTimer::visiblePageAlignmentInterval();
-}
-
 DOMTimerCoordinator* WorkerGlobalScope::timers()
 {
     return &m_timers;
 }
 
 WorkerLocation* WorkerGlobalScope::location() const
 {
     if (!m_location)
         m_location = WorkerLocation::create(m_url);
     return m_location.get();
@@ skipping 262 matching lines @@
     visitor->trace(m_pendingMessages);
     visitor->trace(m_eventListeners);
     HeapSupplementable<WorkerGlobalScope>::trace(visitor);
 #endif
     ExecutionContext::trace(visitor);
     EventTargetWithInlineData::trace(visitor);
     SecurityContext::trace(visitor);
 }
 
 } // namespace blink