Revert of DevTools: add the logging aspect into the PerformanceMonitor

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

Index: third_party/WebKit/Source/core/events/EventTarget.cpp
diff --git a/third_party/WebKit/Source/core/events/EventTarget.cpp b/third_party/WebKit/Source/core/events/EventTarget.cpp
index 99562b50dbc1064632c9c4b1335e3a1f0570fef2..afeac1d4727d710b5c7a65c86f050c9cc57a3d59 100644
--- a/third_party/WebKit/Source/core/events/EventTarget.cpp
+++ b/third_party/WebKit/Source/core/events/EventTarget.cpp
@@ -42,9 +42,9 @@
 #include "core/events/PointerEvent.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/LocalDOMWindow.h"
-#include "core/frame/PerformanceMonitor.h"
 #include "core/frame/Settings.h"
 #include "core/frame/UseCounter.h"
+#include "core/inspector/ConsoleMessage.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "platform/EventDispatchForbiddenScope.h"
 #include "platform/Histogram.h"
@@ -59,8 +59,6 @@
 namespace blink {
 namespace {
 
-static const double kBlockedWarningThresholdMillis = 100.0;
-
 enum PassiveForcedListenerResultType {
   PreventDefaultNotCalled,
   DocumentLevelTouchPreventDefaultCalled,
@@ -96,15 +94,19 @@
          eventType == EventTypeNames::wheel;
 }
 
-double blockedEventsWarningThreshold(ExecutionContext* context, Event* event) {
+double blockedEventsWarningThreshold(const 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;
+  if (!context->isDocument())
+    return 0.0;
+  FrameHost* frameHost = toDocument(context)->frameHost();
+  if (!frameHost)
+    return 0.0;
+  return frameHost->settings().blockedMainThreadEventsWarningThreshold();
 }
 
 void reportBlockedEvent(ExecutionContext* context,
@@ -135,8 +137,9 @@
       eventListenerEffectiveFunction(v8Listener->isolate(), handler);
   std::unique_ptr<SourceLocation> location =
       SourceLocation::fromFunction(function);
-  PerformanceMonitor::logViolation(WarningMessageLevel, context, messageText,
-                                   std::move(location));
+  ConsoleMessage* message = ConsoleMessage::create(
+      JSMessageSource, WarningMessageLevel, messageText, std::move(location));
+  context->addConsoleMessage(message);
   registeredListener->setBlockedEventWarningEmitted();
 }