QmlDebugger: Added dialog "Attach to QML Port..."

The dialog is added to Debug->Start Debugging menu option. It specifies the host
and port that the JSDebugClient connects to for listening to debug messages.

Change-Id: I7f828c169ff2338f4780025f72182c5fc8784c4a
Reviewed-on: http://codereview.qt-project.org/4824
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>

src/plugins/debugger/debuggerdialogs.h

@@ -47,6 +47,7 @@ class AttachCoreDialog;
 class AttachExternalDialog;
 class StartExternalDialog;
 class StartRemoteDialog;
+class AttachToQmlPortDialog;
 class StartRemoteEngineDialog;
 } // namespace Ui
 
@@ -216,6 +217,24 @@ private:
     Ui::StartRemoteDialog *m_ui;
 };
 
+class AttachToQmlPortDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit AttachToQmlPortDialog(QWidget *parent);
+    ~AttachToQmlPortDialog();
+
+    QString host() const;
+    void setHost(const QString &host);
+
+    int port() const;
+    void setPort(const int port);
+
+private:
+    Ui::AttachToQmlPortDialog *m_ui;
+};
+
 class StartRemoteCdbDialog : public QDialog
 {
     Q_OBJECT