[DevTools] Move IO and Tracing to new generator.

content/browser/devtools/devtools_session.h

 // Copyright 2016 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.
 
 #include "content/browser/devtools/protocol/forward.h"
 
 namespace content {
 
 class DevToolsAgentHostImpl;
 
 class DevToolsSession : public protocol::FrontendChannel {
  public:
   DevToolsSession(DevToolsAgentHostImpl* agent_host, int session_id);
   ~DevToolsSession() override;
 
+  void ResetDispatcher();
+
   int session_id() { return session_id_; }
   protocol::UberDispatcher* dispatcher() { return dispatcher_.get(); }
 
  private:
   // protocol::FrontendChannel implementation.
   void sendProtocolResponse(int call_id, const std::string& message) override;
   void sendProtocolNotification(const std::string& message) override;
   void flushProtocolNotifications() override;
 
   DevToolsAgentHostImpl* agent_host_;
   int session_id_;
   std::unique_ptr<protocol::UberDispatcher> dispatcher_;
 };
 
 }  // namespace content