[DevTools] Support multiple sessions in Target domain

third_party/WebKit/Source/core/inspector/InspectorWorkerAgent.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 47 matching lines @@
 
   // Probes
   void ShouldWaitForDebuggerOnWorkerStart(bool* result);
   void DidStartWorker(WorkerInspectorProxy*, bool waiting_for_debugger);
   void WorkerTerminated(WorkerInspectorProxy*);
 
   // Called from Dispatcher
   protocol::Response setAutoAttach(bool auto_attach,
                                    bool wait_for_debugger_on_start) override;
   protocol::Response setAttachToFrames(bool attach) override;
-  protocol::Response sendMessageToTarget(const String& target_id,
+  protocol::Response sendMessageToTarget(const String& session_id,
                                          const String& message) override;
 
   void SetTracingSessionId(const String&);
 
  private:
   bool AutoAttachEnabled();
   void ConnectToAllProxies();
   void DisconnectFromAllProxies(bool report_to_frontend);
   void ConnectToProxy(WorkerInspectorProxy*, bool waiting_for_debugger);
-  protocol::DictionaryValue* AttachedWorkerIds();
+  protocol::DictionaryValue* AttachedProtocolIds();
 
   // WorkerInspectorProxy::PageInspector implementation.
   void DispatchMessageFromWorker(WorkerInspectorProxy*,
                                  int session_id,
                                  const String& message) override;
 
   Member<InspectedFrames> inspected_frames_;
-  HeapHashMap<String, Member<WorkerInspectorProxy>> connected_proxies_;
+  HeapHashMap<int, Member<WorkerInspectorProxy>> connected_proxies_;
+  HashMap<String, int> protocol_to_session_id_;
+  HashMap<int, String> session_to_protocol_id_;
   String tracing_session_id_;
+  static int last_session_id_;
 };
 
 }  // namespace blink
 
 #endif  // !defined(InspectorWorkerAgent_h)