Move throttling of background timers into the renderer scheduler

third_party/WebKit/Source/core/frame/DOMTimerCoordinator.cpp

 // Copyright 2015 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 "config.h"
 #include "core/frame/DOMTimerCoordinator.h"
 
 #include "core/dom/ExecutionContext.h"
 #include "core/frame/DOMTimer.h"
 
@@ skipping 24 matching lines @@
 {
     if (timeoutID <= 0)
         return;
 
     if (DOMTimer* removedTimer = m_timers.get(timeoutID))
         removedTimer->disposeTimer();
 
     m_timers.remove(timeoutID);
 }
 
-void DOMTimerCoordinator::didChangeTimerAlignmentInterval()
-{
-    // Reschedule timers in increasing order of desired run time to maintain their relative order.
-    // TODO(skyostil): Move timer alignment into the scheduler.
-    WillBeHeapVector<RawPtrWillBeMember<DOMTimer>> timers;
-    timers.reserveCapacity(m_timers.size());
-    for (TimeoutMap::iterator iter = m_timers.begin(); iter != m_timers.end(); ++iter)
-        timers.append(iter->value.get());
-    std::sort(timers.begin(), timers.end(), TimerBase::Comparator());
-    double now = monotonicallyIncreasingTime();
-    for (DOMTimer* timer : timers)
-        timer->didChangeAlignmentInterval(now);
-}
-
 DEFINE_TRACE(DOMTimerCoordinator)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_timers);
 #endif
 }
 
 int DOMTimerCoordinator::nextID()
 {
     while (true) {
         ++m_circularSequentialID;
 
         if (m_circularSequentialID <= 0)
             m_circularSequentialID = 1;
 
         if (!m_timers.contains(m_circularSequentialID))
             return m_circularSequentialID;
     }
 }
 
 void DOMTimerCoordinator::setTimerTaskRunner(PassOwnPtr<WebTaskRunner> timerTaskRunner)
 {
     m_timerTaskRunner = timerTaskRunner;
 }
 
 } // namespace blink