Tried using CrossThreadPersistent for workerDebuggerAgents

Source/core/inspector/InspectorDOMAgent.cpp

Index: Source/core/inspector/InspectorDOMAgent.cpp
diff --git a/Source/core/inspector/InspectorDOMAgent.cpp b/Source/core/inspector/InspectorDOMAgent.cpp
index 9a9012c9a4b913f5377e036eaeda01675634266e..70dcf52bdb51d9bab89e4999f3dbf62bc80878bd 100644
--- a/Source/core/inspector/InspectorDOMAgent.cpp
+++ b/Source/core/inspector/InspectorDOMAgent.cpp
@@ -180,16 +180,17 @@ static Node* hoveredNodeForEvent(LocalFrame* frame, const PlatformTouchEvent& ev
     return hoveredNodeForPoint(frame, points[0].pos(), ignorePointerEventsNone);
 }
 
-class RevalidateStyleAttributeTask {
-    WTF_MAKE_FAST_ALLOCATED;
+class RevalidateStyleAttributeTask : public NoBaseWillBeGarbageCollectedFinalized<RevalidateStyleAttributeTask> {
+    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
     RevalidateStyleAttributeTask(InspectorDOMAgent*);
     void scheduleFor(Element*);
     void reset() { m_timer.stop(); }
     void onTimer(Timer<RevalidateStyleAttributeTask>*);
+    void trace(Visitor*);
 
 private:
-    InspectorDOMAgent* m_domAgent;
+    RawPtrWillBeMember<InspectorDOMAgent> m_domAgent;
     Timer<RevalidateStyleAttributeTask> m_timer;
     HashSet<RefPtr<Element> > m_elements;
 };
@@ -218,6 +219,11 @@ void RevalidateStyleAttributeTask::onTimer(Timer<RevalidateStyleAttributeTask>*)
     m_elements.clear();
 }
 
+void RevalidateStyleAttributeTask::trace(Visitor* visitor)
+{
+    visitor->trace(m_domAgent);
+}
+
 String InspectorDOMAgent::toErrorString(ExceptionState& exceptionState)
 {
     if (exceptionState.hadException())
@@ -248,8 +254,8 @@ InspectorDOMAgent::~InspectorDOMAgent()
 void InspectorDOMAgent::setFrontend(InspectorFrontend* frontend)
 {
     ASSERT(!m_frontend);
-    m_history = adoptPtr(new InspectorHistory());
-    m_domEditor = adoptPtr(new DOMEditor(m_history.get()));
+    m_history = adoptPtrWillBeNoop(new InspectorHistory());
+    m_domEditor = adoptPtrWillBeNoop(new DOMEditor(m_history.get()));
 
     m_frontend = frontend->dom();
     m_instrumentingAgents->setInspectorDOMAgent(this);
@@ -1906,7 +1912,7 @@ void InspectorDOMAgent::didInvalidateStyleAttr(Node* node)
         return;
 
     if (!m_revalidateStyleAttrTask)
-        m_revalidateStyleAttrTask = adoptPtr(new RevalidateStyleAttributeTask(this));
+        m_revalidateStyleAttrTask = adoptPtrWillBeNoop(new RevalidateStyleAttributeTask(this));
     m_revalidateStyleAttrTask->scheduleFor(toElement(node));
 }
 
@@ -2094,5 +2100,14 @@ bool InspectorDOMAgent::pushDocumentUponHandlelessOperation(ErrorString* errorSt
     return true;
 }
 
+void InspectorDOMAgent::trace(Visitor* visitor)
+{
+    visitor->trace(m_pageAgent);
+    visitor->trace(m_revalidateStyleAttrTask);
+    visitor->trace(m_history);
+    visitor->trace(m_domEditor);
+    InspectorBaseAgent::trace(visitor);
+}
+
 } // namespace WebCore