Ensure the scheduler always changes from UseCase LOADING to NONE.

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

 // 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.
 
 #ifndef PaintTiming_h
 #define PaintTiming_h
 
 #include "core/dom/Document.h"
 #include "core/paint/FirstMeaningfulPaintDetector.h"
 #include "platform/Supplementable.h"
@@ skipping 25 matching lines @@
 
   // markFirstTextPaint, markFirstImagePaint, and markFirstContentfulPaint
   // will also record first paint if first paint hasn't been recorded yet.
   void markFirstContentfulPaint();
 
   // markFirstTextPaint and markFirstImagePaint will also record first
   // contentful paint if first contentful paint hasn't been recorded yet.
   void markFirstTextPaint();
   void markFirstImagePaint();
 
-  void markFirstMeaningfulPaintCandidate();
+  void setFirstMeaningfulPaintCandidate(double timestamp);
   void setFirstMeaningfulPaint(double stamp);
   void notifyPaint(bool isFirstPaint, bool textPainted, bool imagePainted);
 
   // The getters below return monotonically-increasing seconds, or zero if the
   // given paint event has not yet occurred. See the comments for
   // monotonicallyIncreasingTime in wtf/CurrentTime.h for additional details.
 
   // firstPaint returns the first time that anything was painted for the
   // current document.
   double firstPaint() const { return m_firstPaint; }
@@ skipping 50 matching lines @@
   double m_firstContentfulPaint = 0.0;
   double m_firstMeaningfulPaint = 0.0;
   double m_firstMeaningfulPaintCandidate = 0.0;
 
   Member<FirstMeaningfulPaintDetector> m_fmpDetector;
 };
 
 }  // namespace blink
 
 #endif