Loosen FirstMeaningfulPaint UMA network-idle heuristics

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

Index: third_party/WebKit/Source/core/paint/FirstMeaningfulPaintDetector.h
diff --git a/third_party/WebKit/Source/core/paint/FirstMeaningfulPaintDetector.h b/third_party/WebKit/Source/core/paint/FirstMeaningfulPaintDetector.h
index 6053c29f84f4118bc578d73f19ad4c1a89d6b1e9..f63436486800fd2a4f90c6f70e1e2cd083625b74 100644
--- a/third_party/WebKit/Source/core/paint/FirstMeaningfulPaintDetector.h
+++ b/third_party/WebKit/Source/core/paint/FirstMeaningfulPaintDetector.h
@@ -54,10 +54,12 @@ class CORE_EXPORT FirstMeaningfulPaintDetector
   friend class FirstMeaningfulPaintDetectorTest;
 
   Document* document();
-  void networkStableTimerFired(TimerBase*);
+  bool isNetworkQuiet(int maxActiveConnections);
+  void network0QuietTimerFired(TimerBase*);
+  void network2QuietTimerFired(TimerBase*);
+  void reportHistograms();
 
-  enum State { NextPaintIsNotMeaningful, NextPaintIsMeaningful, Reported };
-  State m_state = NextPaintIsNotMeaningful;
+  bool m_nextPaintIsMeaningful = false;
 
   Member<PaintTiming> m_paintTiming;
   double m_provisionalFirstMeaningfulPaint = 0.0;
@@ -65,7 +67,12 @@ class CORE_EXPORT FirstMeaningfulPaintDetector
   double m_accumulatedSignificanceWhileHavingBlankText = 0.0;
   unsigned m_prevLayoutObjectCount = 0;
   bool m_seenFirstMeaningfulPaintCandidate = false;
-  TaskRunnerTimer<FirstMeaningfulPaintDetector> m_networkStableTimer;
+  bool m_network0QuietReached = false;
+  bool m_network2QuietReached = false;
+  double m_firstMeaningfulPaint0Quiet = 0.0;
+  double m_firstMeaningfulPaint2Quiet = 0.0;
+  TaskRunnerTimer<FirstMeaningfulPaintDetector> m_network0QuietTimer;
+  TaskRunnerTimer<FirstMeaningfulPaintDetector> m_network2QuietTimer;
 };
 
 }  // namespace blink