Tried using CrossThreadPersistent for workerDebuggerAgents

Source/core/inspector/InspectorInputAgent.h

Index: Source/core/inspector/InspectorInputAgent.h
diff --git a/Source/core/inspector/InspectorInputAgent.h b/Source/core/inspector/InspectorInputAgent.h
index 95543eccc94c54ab89c9b25e7868c55c3dd3af97..0c1617e7c1f0433bb9b81da88a40ef6af390b46d 100644
--- a/Source/core/inspector/InspectorInputAgent.h
+++ b/Source/core/inspector/InspectorInputAgent.h
@@ -45,12 +45,13 @@ typedef String ErrorString;
 class InspectorInputAgent FINAL : public InspectorBaseAgent<InspectorInputAgent>, public InspectorBackendDispatcher::InputCommandHandler {
     WTF_MAKE_NONCOPYABLE(InspectorInputAgent);
 public:
-    static PassOwnPtr<InspectorInputAgent> create(Page* page, InspectorClient* client)
+    static PassOwnPtrWillBeRawPtr<InspectorInputAgent> create(Page* page, InspectorClient* client)
     {
-        return adoptPtr(new InspectorInputAgent(page, client));
+        return adoptPtrWillBeNoop(new InspectorInputAgent(page, client));
     }
 
     virtual ~InspectorInputAgent();
+    virtual void trace(Visitor*) OVERRIDE;
 
     // Methods called from the frontend for simulating input.
     virtual void dispatchKeyEvent(ErrorString*, const String& type, const int* modifiers, const double* timestamp, const String* text, const String* unmodifiedText, const String* keyIdentifier, const int* windowsVirtualKeyCode, const int* nativeVirtualKeyCode, const bool* autoRepeat, const bool* isKeypad, const bool* isSystemKey) OVERRIDE;
@@ -59,7 +60,7 @@ public:
 private:
     InspectorInputAgent(Page*, InspectorClient*);
 
-    Page* m_page;
+    RawPtrWillBeMember<Page> m_page;
     InspectorClient* m_client;
 };