[DevTools] Move IO and Tracing to new generator.

content/browser/devtools/devtools_session.cc

 // 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/devtools_session.h"
 
 #include "content/browser/devtools/devtools_agent_host_impl.h"
 #include "content/browser/devtools/protocol/protocol.h"
 
 namespace content {
 
 DevToolsSession::DevToolsSession(
     DevToolsAgentHostImpl* agent_host,
     int session_id)
     : agent_host_(agent_host),
       session_id_(session_id),
       dispatcher_(new protocol::UberDispatcher(this)) {
 }
 
 DevToolsSession::~DevToolsSession() {}
 
+void DevToolsSession::ResetDispatcher() {
+  dispatcher_.reset();
+}
+
 void DevToolsSession::sendProtocolResponse(
     int call_id,
     const std::string& message) {
   agent_host_->SendMessageToClient(session_id_, message);
 }
 
 void DevToolsSession::sendProtocolNotification(const std::string& message) {
   agent_host_->SendMessageToClient(session_id_, message);
 }
 
 void DevToolsSession::flushProtocolNotifications() {
 }
 
 }  // namespace content