Move FirstMeaningfulPaintDetector timer to frame-specific TaskRunnerTimer

third_party/WebKit/Source/core/paint/FirstMeaningfulPaintDetector.h

 // Copyright 2016 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.
 
 #ifndef FirstMeaningfulPaintDetector_h
 #define FirstMeaningfulPaintDetector_h
 
 #include "core/CoreExport.h"
 #include "platform/Timer.h"
 #include "platform/heap/Handle.h"
@@ skipping 20 matching lines @@
     void reset() { m_count = 0; }
     void increment() { m_count++; }
     unsigned count() const { return m_count; }
 
    private:
     unsigned m_count = 0;
   };
 
   static FirstMeaningfulPaintDetector& from(Document&);
 
-  FirstMeaningfulPaintDetector(PaintTiming*);
+  FirstMeaningfulPaintDetector(PaintTiming*, Document&);
   virtual ~FirstMeaningfulPaintDetector() {}
 
   void markNextPaintAsMeaningfulIfNeeded(const LayoutObjectCounter&,
                                          int contentsHeightBeforeLayout,
                                          int contentsHeightAfterLayout,
                                          int visibleHeight);
   void notifyPaint();
   void checkNetworkStable();
 
   DECLARE_TRACE();
 
  private:
   friend class FirstMeaningfulPaintDetectorTest;
 
   Document* document();
   void networkStableTimerFired(TimerBase*);
 
   enum State { NextPaintIsNotMeaningful, NextPaintIsMeaningful, Reported };
   State m_state = NextPaintIsNotMeaningful;
 
   Member<PaintTiming> m_paintTiming;
   double m_provisionalFirstMeaningfulPaint = 0.0;
   double m_maxSignificanceSoFar = 0.0;
   double m_accumulatedSignificanceWhileHavingBlankText = 0.0;
   unsigned m_prevLayoutObjectCount = 0;
   bool m_seenFirstMeaningfulPaintCandidate = false;
-  Timer<FirstMeaningfulPaintDetector> m_networkStableTimer;
+  TaskRunnerTimer<FirstMeaningfulPaintDetector> m_networkStableTimer;
 };
 
 }  // namespace blink
 
 #endif