Revert of [DevTools] Filter any messages from previous sessions in DevToolsAgentHostImpl

content/renderer/service_worker/embedded_worker_devtools_agent.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_SERVICE_WORKER_EMBEDDED_WORKER_DEVTOOLS_AGENT_H_
 #define CONTENT_RENDERER_SERVICE_WORKER_EMBEDDED_WORKER_DEVTOOLS_AGENT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 12 matching lines @@
 
 class EmbeddedWorkerDevToolsAgent : public IPC::Listener {
  public:
   EmbeddedWorkerDevToolsAgent(blink::WebEmbeddedWorker* webworker,
                               int route_id);
   ~EmbeddedWorkerDevToolsAgent() override;
 
   bool OnMessageReceived(const IPC::Message& message) override;
 
  private:
-  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 OnAttach(const std::string& host_id);
+  void OnReattach(const std::string& host_id, const std::string& state);
   void OnDetach();
-  void OnDispatchOnInspectorBackend(int session_id, const std::string& message);
+  void OnDispatchOnInspectorBackend(const std::string& message);
 
   blink::WebEmbeddedWorker* webworker_;
   int route_id_;
 
   DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerDevToolsAgent);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SERVICE_WORKER_EMBEDDED_WORKER_DEVTOOLS_AGENT_H_