Convert performance monitor to the subscription model.

third_party/WebKit/Source/core/events/EventTarget.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  *           (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ skipping 41 matching lines @@
 #include "wtf/StdLibExtras.h"
 #include "wtf/Threading.h"
 #include "wtf/Vector.h"
 #include <memory>
 
 using namespace WTF;
 
 namespace blink {
 namespace {
 
-static const double kBlockedWarningThresholdMillis = 100.0;
-
 enum PassiveForcedListenerResultType {
   PreventDefaultNotCalled,
   DocumentLevelTouchPreventDefaultCalled,
   PassiveForcedListenerResultTypeMax
 };
 
 Event::PassiveMode eventPassiveMode(
     const RegisteredEventListener& eventListener) {
   if (!eventListener.passive()) {
     if (eventListener.passiveSpecified())
@@ skipping 20 matching lines @@
   return eventType == EventTypeNames::touchstart ||
          eventType == EventTypeNames::touchmove;
 }
 
 bool isScrollBlockingEvent(const AtomicString& eventType) {
   return isTouchScrollBlockingEvent(eventType) ||
          eventType == EventTypeNames::mousewheel ||
          eventType == EventTypeNames::wheel;
 }
 
-double blockedEventsWarningThreshold(ExecutionContext* context, Event* event) {
+double blockedEventsWarningThreshold(ExecutionContext* context,
+                                     const Event* event) {
   if (!event->cancelable())
     return 0.0;
   if (!isScrollBlockingEvent(event->type()))
     return 0.0;
-
-  return PerformanceMonitor::enabled(context)
-             ? kBlockedWarningThresholdMillis / 1000
-             : 0;
+  return PerformanceMonitor::threshold(context,
+                                       PerformanceMonitor::kBlockedEvent);
 }
 
 void reportBlockedEvent(ExecutionContext* context,
                         const Event* event,
                         RegisteredEventListener* registeredListener,
                         double delayedSeconds) {
   if (registeredListener->listener()->type() !=
       EventListener::JSEventListenerType)
     return;
 
@@ skipping 10 matching lines @@
       "Handling of '%s' input event was delayed for %ld ms due to main thread "
       "being busy. "
       "Consider marking event handler as 'passive' to make the page more "
       "responsive.",
       event->type().getString().utf8().data(), lround(delayedSeconds * 1000));
 
   v8::Local<v8::Function> function =
       eventListenerEffectiveFunction(v8Listener->isolate(), handler);
   std::unique_ptr<SourceLocation> location =
       SourceLocation::fromFunction(function);
-  PerformanceMonitor::logViolation(WarningMessageLevel, context, messageText,
-                                   std::move(location));
+
+  PerformanceMonitor::reportGenericViolation(
+      context, PerformanceMonitor::kBlockedEvent, messageText, delayedSeconds,
+      location.get());
   registeredListener->setBlockedEventWarningEmitted();
 }
 
 }  // namespace
 
 EventTargetData::EventTargetData() {}
 
 EventTargetData::~EventTargetData() {}
 
 DEFINE_TRACE(EventTargetData) {
@@ skipping 610 matching lines @@
   // they have one less listener to invoke.
   if (d->firingEventIterators) {
     for (size_t i = 0; i < d->firingEventIterators->size(); ++i) {
       d->firingEventIterators->at(i).iterator = 0;
       d->firingEventIterators->at(i).end = 0;
     }
   }
 }
 
 }  // namespace blink