Tried using CrossThreadPersistent for workerDebuggerAgents

Source/core/inspector/PageDebuggerAgent.cpp

Index: Source/core/inspector/PageDebuggerAgent.cpp
diff --git a/Source/core/inspector/PageDebuggerAgent.cpp b/Source/core/inspector/PageDebuggerAgent.cpp
index e5b889a23180d13b19a3a8d99cacadbc80caf821..bb895a26483b2dd144fc226b9b83c8784fc91394 100644
--- a/Source/core/inspector/PageDebuggerAgent.cpp
+++ b/Source/core/inspector/PageDebuggerAgent.cpp
@@ -44,9 +44,9 @@
 
 namespace WebCore {
 
-PassOwnPtr<PageDebuggerAgent> PageDebuggerAgent::create(PageScriptDebugServer* pageScriptDebugServer, InspectorPageAgent* pageAgent, InjectedScriptManager* injectedScriptManager, InspectorOverlay* overlay)
+PassOwnPtrWillBeRawPtr<PageDebuggerAgent> PageDebuggerAgent::create(PageScriptDebugServer* pageScriptDebugServer, InspectorPageAgent* pageAgent, InjectedScriptManager* injectedScriptManager, InspectorOverlay* overlay)
 {
-    return adoptPtr(new PageDebuggerAgent(pageScriptDebugServer, pageAgent, injectedScriptManager, overlay));
+    return adoptPtrWillBeNoop(new PageDebuggerAgent(pageScriptDebugServer, pageAgent, injectedScriptManager, overlay));
 }
 
 PageDebuggerAgent::PageDebuggerAgent(PageScriptDebugServer* pageScriptDebugServer, InspectorPageAgent* pageAgent, InjectedScriptManager* injectedScriptManager, InspectorOverlay* overlay)
@@ -62,6 +62,12 @@ PageDebuggerAgent::~PageDebuggerAgent()
 {
 }
 
+void PageDebuggerAgent::trace(Visitor* visitor)
+{
+    visitor->trace(m_pageAgent);
+    InspectorDebuggerAgent::trace(visitor);
+}
+
 void PageDebuggerAgent::enable()
 {
     InspectorDebuggerAgent::enable();