WebAssembly: Use newer approach for channel setup

Change-Id: I3f7cfbbbe0734c651ad33fcb88850b9445be1df5
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/projectexplorer/runcontrol.cpp

@@ -298,9 +298,11 @@ public:
     bool useDebugChannel = false;
     bool useQmlChannel = false;
     bool usePerfChannel = false;
+    bool useWorkerChannel = false;
     QUrl debugChannel;
     QUrl qmlChannel;
     QUrl perfChannel;
+    QUrl workerChannel;
 };
 
 class RunControlPrivate : public QObject, public RunControlPrivateData
@@ -606,6 +608,8 @@ void RunControlPrivate::startPortsGathererIfNeededAndContinueStart()
                 qmlChannel = getNextChannel();
             if (usePerfChannel)
                 perfChannel = getNextChannel();
+            if (useWorkerChannel)
+                workerChannel = getNextChannel();
 
             continueStart();
         } else {
@@ -700,6 +704,17 @@ QUrl RunControl::perfChannel() const
     return d->perfChannel;
 }
 
+void RunControl::requestWorkerChannel()
+{
+    d->enablePortsGatherer();
+    d->useWorkerChannel = true;
+}
+
+QUrl RunControl::workerChannel() const
+{
+    return d->workerChannel;
+}
+
 void RunControlPrivate::continueStart()
 {
     checkState(RunControlState::Starting);

src/plugins/projectexplorer/runcontrol.h

@@ -258,6 +258,9 @@ public:
     bool usesPerfChannel() const;
     QUrl perfChannel() const;
 
+    void requestWorkerChannel();
+    QUrl workerChannel() const;
+
 signals:
     void appendMessage(const QString &msg, Utils::OutputFormat format);
     void aboutToStart();

src/plugins/webassembly/webassemblyrunconfiguration.cpp

@@ -205,7 +205,7 @@ public:
     EmrunRunWorker(RunControl *runControl)
         : SimpleTargetRunner(runControl)
     {
-        runControl->enablePortsGatherer();
+        runControl->requestWorkerChannel();
 
         setStartModifier([this, runControl] {
             const QString browserId =
@@ -213,7 +213,7 @@ public:
             setCommandLine(emrunCommand(runControl->target(),
                                         runControl->buildKey(),
                                         browserId,
-                                        QString::number(runControl->findEndPoint().port())));
+                                        QString::number(runControl->workerChannel().port())));
             setEnvironment(runControl->buildEnvironment());
         });
     }