Improve FirstMeaningfulPaintDetectorTest's timer tests

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

 // 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.
 
 #include "core/paint/FirstMeaningfulPaintDetector.h"
 
 #include "core/css/FontFaceSet.h"
 #include "core/dom/TaskRunnerHelper.h"
 #include "core/paint/PaintTiming.h"
 #include "platform/Histogram.h"
 #include "platform/instrumentation/tracing/TraceEvent.h"
 #include "platform/loader/fetch/ResourceFetcher.h"
 
 namespace blink {
 
 namespace {
 
 // Web fonts that laid out more than this number of characters block First
 // Meaningful Paint.
 const int kBlankCharactersThreshold = 200;
 
-// The page is n-quiet if there are no more than n active network requests for
-// this duration of time.
-const double kNetwork2QuietWindowSeconds = 3;
-const double kNetwork0QuietWindowSeconds = 0.5;
-
 }  // namespace
 
 FirstMeaningfulPaintDetector& FirstMeaningfulPaintDetector::from(
     Document& document) {
   return PaintTiming::from(document).firstMeaningfulPaintDetector();
 }
 
 FirstMeaningfulPaintDetector::FirstMeaningfulPaintDetector(
     PaintTiming* paintTiming,
     Document& document)
@@ skipping 189 matching lines @@
   } else if (m_firstMeaningfulPaint2Quiet) {
     hadNetworkQuietHistogram.count(HadNetwork2Quiet);
   }
 }
 
 DEFINE_TRACE(FirstMeaningfulPaintDetector) {
   visitor->trace(m_paintTiming);
 }
 
 }  // namespace blink