DevTools: prepare to migrate worker ids from ints to strings.

content/browser/devtools/protocol/worker_handler.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_BROWSER_DEVTOOLS_PROTOCOL_WORKER_HANDLER_H_
 #define CONTENT_BROWSER_DEVTOOLS_PROTOCOL_WORKER_HANDLER_H_
 
 #include "content/browser/devtools/protocol/devtools_protocol_handler.h"
 
 namespace content {
 namespace devtools {
 namespace worker {
 
 class WorkerHandler {
  public:
   typedef DevToolsProtocolClient::Response Response;
 
   WorkerHandler();
   virtual ~WorkerHandler();
 
   void SetClient(scoped_ptr<Client> client);
 
   Response DisconnectFromWorker(int worker_id);
 
+  Response DisconnectFromWorker(const std::string& worker_id);
+
  private:
   scoped_ptr<Client> client_;
 
   DISALLOW_COPY_AND_ASSIGN(WorkerHandler);
 };
 
 }  // namespace worker
 }  // namespace devtools
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_PROTOCOL_WORKER_HANDLER_H_