[DevTools] filter any messages from previous session in DevToolsAgentHostImpl

content/renderer/service_worker/embedded_worker_devtools_agent.h

Index: content/renderer/service_worker/embedded_worker_devtools_agent.h
diff --git a/content/renderer/service_worker/embedded_worker_devtools_agent.h b/content/renderer/service_worker/embedded_worker_devtools_agent.h
index 97c15824fe927e12c7f8ca46fa497f8ac9a4907e..c63081eef4f338aee68fbbd9686fe274b64140c4 100644
--- a/content/renderer/service_worker/embedded_worker_devtools_agent.h
+++ b/content/renderer/service_worker/embedded_worker_devtools_agent.h
@@ -30,10 +30,12 @@ class EmbeddedWorkerDevToolsAgent : public IPC::Listener {
   bool OnMessageReceived(const IPC::Message& message) override;
 
  private:
-  void OnAttach(const std::string& host_id);
-  void OnReattach(const std::string& host_id, const std::string& state);
+  void OnAttach(const std::string& host_id, int session_id);
+  void OnReattach(const std::string& host_id,
+                  int session_id,
+                  const std::string& state);
   void OnDetach();
-  void OnDispatchOnInspectorBackend(const std::string& message);
+  void OnDispatchOnInspectorBackend(int session_id, const std::string& message);
 
   blink::WebEmbeddedWorker* webworker_;
   int route_id_;