[DevTools] Filter any messages from previous sessions in DevToolsAgentHostImpl

content/browser/devtools/protocol/devtools_protocol_client.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_DEVTOOLS_PROTOCOL_CLIENT_H_
 #define CONTENT_BROWSER_DEVTOOLS_PROTOCOL_DEVTOOLS_PROTOCOL_CLIENT_H_
 
 #include "base/callback.h"
 #include "base/values.h"
 
 namespace content {
 
 using DevToolsCommandId = int;
 class DevToolsProtocolHandler;
 class DevToolsProtocolDispatcher;
 
 class DevToolsProtocolClient {
  public:
-  typedef base::Callback<void(const std::string& message)>
+  typedef base::Callback<void(int, const std::string& message)>
       RawMessageCallback;
   static const DevToolsCommandId kNoId;
 
   struct Response {
    public:
     static Response FallThrough();
     static Response OK();
     static Response InvalidParams(const std::string& param);
     static Response InternalError(const std::string& message);
     static Response ServerError(const std::string& message);
 
     int status() const;
     const std::string& message() const;
 
     bool IsFallThrough() const;
 
    private:
     friend class DevToolsProtocolHandler;
 
     explicit Response(int status);
     Response(int status, const std::string& message);
 
     int status_;
     std::string message_;
   };
 
-  bool SendError(DevToolsCommandId command_id,
+  bool SendError(int session_id,
+                 DevToolsCommandId command_id,
                  const Response& response);
 
   // Sends message to client, the caller is presumed to properly
   // format the message. Do not use unless you must.
-  void SendRawMessage(const std::string& message);
+  void SendRawMessage(int session_id, const std::string& message);
 
   explicit DevToolsProtocolClient(
       const RawMessageCallback& raw_message_callback);
   virtual ~DevToolsProtocolClient();
 
  protected:
-  void SendSuccess(DevToolsCommandId command_id,
+  void SendSuccess(int session_id,
+                   DevToolsCommandId command_id,
                    scoped_ptr<base::DictionaryValue> params);
   void SendNotification(const std::string& method,
                         scoped_ptr<base::DictionaryValue> params);
 
  private:
   friend class DevToolsProtocolDispatcher;
 
-  void SendMessage(const base::DictionaryValue& message);
+  void SendMessage(int session_id, const base::DictionaryValue& message);
 
   RawMessageCallback raw_message_callback_;
   DISALLOW_COPY_AND_ASSIGN(DevToolsProtocolClient);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_PROTOCOL_DEVTOOLS_PROTOCOL_CLIENT_H_