[DevTools] Support multiple sessions in Target domain

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

Index: third_party/WebKit/Source/core/inspector/InspectorWorkerAgent.h
diff --git a/third_party/WebKit/Source/core/inspector/InspectorWorkerAgent.h b/third_party/WebKit/Source/core/inspector/InspectorWorkerAgent.h
index e7a4ce7f9625691a3e7a5bb7144002f3ace15995..48a426ea2532b152928cb3ed2c60062ed83b3f38 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorWorkerAgent.h
+++ b/third_party/WebKit/Source/core/inspector/InspectorWorkerAgent.h
@@ -65,7 +65,7 @@ class CORE_EXPORT InspectorWorkerAgent final
   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&);
@@ -75,7 +75,7 @@ class CORE_EXPORT InspectorWorkerAgent final
   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*,
@@ -83,8 +83,11 @@ class CORE_EXPORT InspectorWorkerAgent final
                                  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