Tried using CrossThreadPersistent for workerDebuggerAgents

Source/core/inspector/InspectorProfilerAgent.h

Index: Source/core/inspector/InspectorProfilerAgent.h
diff --git a/Source/core/inspector/InspectorProfilerAgent.h b/Source/core/inspector/InspectorProfilerAgent.h
index ad7a9f4c482f2f8fd11950a0ca569d61d46878de..39ed60e5fc2f9b66d7465a11c5e42d942e0c8711 100644
--- a/Source/core/inspector/InspectorProfilerAgent.h
+++ b/Source/core/inspector/InspectorProfilerAgent.h
@@ -52,9 +52,10 @@ class ScriptProfile;
 typedef String ErrorString;
 
 class InspectorProfilerAgent FINAL : public InspectorBaseAgent<InspectorProfilerAgent>, public InspectorBackendDispatcher::ProfilerCommandHandler {
-    WTF_MAKE_NONCOPYABLE(InspectorProfilerAgent); WTF_MAKE_FAST_ALLOCATED;
+    WTF_MAKE_NONCOPYABLE(InspectorProfilerAgent);
+    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
-    static PassOwnPtr<InspectorProfilerAgent> create(InjectedScriptManager*, InspectorOverlay*);
+    static PassOwnPtrWillBeRawPtr<InspectorProfilerAgent> create(InjectedScriptManager*, InspectorOverlay*);
     virtual ~InspectorProfilerAgent();
 
     void consoleProfile(const String& title, ScriptState*);