[DevTools] Support multiple sessions in Target domain

third_party/WebKit/LayoutTests/inspector-protocol/debugger/debugger-pause-dedicated-worker-loop.html

Index: third_party/WebKit/LayoutTests/inspector-protocol/debugger/debugger-pause-dedicated-worker-loop.html
diff --git a/third_party/WebKit/LayoutTests/inspector-protocol/debugger/debugger-pause-dedicated-worker-loop.html b/third_party/WebKit/LayoutTests/inspector-protocol/debugger/debugger-pause-dedicated-worker-loop.html
index 5d3c19d1c1608adc8d0f3d7fbb2bbb478e2fab50..c336ad59fc0d2015b640ed6c497e2dcba419e024 100644
--- a/third_party/WebKit/LayoutTests/inspector-protocol/debugger/debugger-pause-dedicated-worker-loop.html
+++ b/third_party/WebKit/LayoutTests/inspector-protocol/debugger/debugger-pause-dedicated-worker-loop.html
@@ -18,13 +18,13 @@ function startWorkerAndRunTest()
 
 function test()
 {
-    var workerId;
+    var workerSessionId;
     var workerRequestId = 1;
     function sendCommandToWorker(method, params)
     {
         InspectorTest.sendCommand("Target.sendMessageToTarget",
             {
-                "targetId": workerId,
+                "sessionId": workerSessionId,
                 "message": JSON.stringify({ "method": method,
                                             "params": params,
                                             "id": workerRequestId })
@@ -45,7 +45,7 @@ function test()
     var debuggerEnableRequestId = -1;
     InspectorTest.eventHandler["Target.attachedToTarget"] = function(messageObject)
     {
-        workerId = messageObject["params"]["targetInfo"]["targetId"];
+        workerSessionId = messageObject["params"]["sessionId"];
         InspectorTest.log("Worker created");
         InspectorTest.log("didConnectToWorker");
         // Enable debugger so that V8 can interrupt and handle inspector commands while there is a script running in a tight loop.