[blink] Support moving timers between WebTaskRunners

third_party/WebKit/Source/platform/Timer.h

 /*
  * Copyright (C) 2006 Apple Computer, 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 57 matching lines @@
 
   double nextFireInterval() const;
   double repeatInterval() const { return m_repeatInterval; }
 
   void augmentRepeatInterval(double delta) {
     double now = timerMonotonicallyIncreasingTime();
     setNextFireTime(now, std::max(m_nextFireTime - now + delta, 0.0));
     m_repeatInterval += delta;
   }
 
+  void moveToNewTaskRunner(WebTaskRunner*);
+
   struct PLATFORM_EXPORT Comparator {
     bool operator()(const TimerBase* a, const TimerBase* b) const;
   };
 
  protected:
   static WebTaskRunner* getTimerTaskRunner();
   static WebTaskRunner* getUnthrottledTaskRunner();
 
  private:
   virtual void fired() = 0;
@@ skipping 110 matching lines @@
 inline bool TimerBase::isActive() const {
 #if DCHECK_IS_ON()
   DCHECK_EQ(m_thread, currentThread());
 #endif
   return m_weakPtrFactory.hasWeakPtrs();
 }
 
 }  // namespace blink
 
 #endif  // Timer_h