UI files: Do not polute the global Ui namespace

Make sure all ui-files are in the plugin's internal namespace.

Change-Id: Ifb2c3093441e8feb89e46f52fbb386fc316cfd13
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/coreplugin/variablechooser.h

@@ -43,6 +43,15 @@ class QLineEdit;
 class QTextEdit;
 class QPlainTextEdit;
 class QListWidgetItem;
+
+namespace Core {
+namespace Internal {
+namespace Ui {
+class VariableChooser;
+} // namespace Ui
+} // namespace Internal
+} // namespace Core
+
 QT_END_NAMESPACE
 
 namespace Utils {
@@ -51,10 +60,6 @@ class IconButton;
 
 namespace Core {
 
-namespace Ui {
-    class VariableChooser;
-}
-
 class CORE_EXPORT VariableChooser : public QWidget
 {
     Q_OBJECT
@@ -76,7 +81,7 @@ private slots:
 private:
     void createIconButton();
 
-    Ui::VariableChooser *ui;
+    Internal::Ui::VariableChooser *ui;
     QString m_defaultDescription;
     QPointer<QLineEdit> m_lineEdit;
     QPointer<QTextEdit> m_textEdit;