Utils/Coreplugin: Clean headers.

Change-Id: I1e0d432127651622d40ff990e1866eac9fac46a0
Reviewed-on: http://codereview.qt.nokia.com/3091
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

src/plugins/coreplugin/variablechooser.h

@@ -35,14 +35,19 @@
 
 #include "core_global.h"
 
-#include <utils/fancylineedit.h>
-
 #include <QtCore/QPointer>
 #include <QtGui/QWidget>
-#include <QtGui/QLineEdit>
-#include <QtGui/QTextEdit>
-#include <QtGui/QPlainTextEdit>
-#include <QtGui/QListWidgetItem>
+
+QT_BEGIN_NAMESPACE
+class QLineEdit;
+class QTextEdit;
+class QPlainTextEdit;
+class QListWidgetItem;
+QT_END_NAMESPACE
+
+namespace Utils {
+class IconButton;
+} // namespace Utils
 
 namespace Core {
 
@@ -79,6 +84,5 @@ private:
     QPointer<Utils::IconButton> m_iconButton;
 };
 
-
 } // namespace Core
 #endif // VARIABLECHOOSER_H