DevTools: introduce perf monitor actions w/ time budget for violations that are event handlers.

third_party/WebKit/Source/core/frame/DOMTimer.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
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 #include "core/frame/DOMTimer.h"
 
 #include "core/dom/ExecutionContext.h"
+#include "core/frame/PerformanceMonitor.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/InspectorTraceEvents.h"
 #include "platform/tracing/TraceEvent.h"
 #include "wtf/CurrentTime.h"
 
 namespace blink {
 
 static const int maxIntervalForUserGestureForwarding =
     1000;  // One second matches Gecko.
 static const int maxTimerNestingLevel = 5;
@@ skipping 86 matching lines @@
   ExecutionContext* context = getExecutionContext();
   ASSERT(context);
   context->timers()->setTimerNestingLevel(m_nestingLevel);
   ASSERT(!context->activeDOMObjectsAreSuspended());
   // Only the first execution of a multi-shot timer should get an affirmative
   // user gesture indicator.
   UserGestureIndicator gestureIndicator(m_userGestureToken.release());
 
   TRACE_EVENT1("devtools.timeline", "TimerFire", "data",
                InspectorTimerFireEvent::data(context, m_timeoutID));
+  PerformanceMonitor::HandlerCall handlerCall(context, m_action);
   InspectorInstrumentation::NativeBreakpoint nativeBreakpoint(
       context, "timerFired", false);
   InspectorInstrumentation::AsyncTask asyncTask(context, this);
 
   // Simple case for non-one-shot timers.
   if (isActive()) {
     if (repeatInterval() && repeatInterval() < minimumInterval) {
       m_nestingLevel++;
       if (m_nestingLevel >= maxTimerNestingLevel)
         augmentRepeatInterval(minimumInterval - repeatInterval());
@@ skipping 28 matching lines @@
 WebTaskRunner* DOMTimer::timerTaskRunner() const {
   return getExecutionContext()->timers()->timerTaskRunner();
 }
 
 DEFINE_TRACE(DOMTimer) {
   visitor->trace(m_action);
   SuspendableTimer::trace(visitor);
 }
 
 }  // namespace blink