Add missing begin/end namepace macros

Change-Id: Ia656aacc021fc063a1ed87acc02cccba1cc9edf7
Reviewed-by: BogDan Vatra <bogdan@kdab.com>

src/webview/qquickviewcontroller.cpp

@@ -44,6 +44,8 @@
 #include <QtQuick/private/qquickitem_p.h>
 #include <QtQuick/private/qquickitemchangelistener_p.h>
 
+QT_BEGIN_NAMESPACE
+
 static const QQuickItemPrivate::ChangeTypes changeMask = QQuickItemPrivate::Geometry
                                                          | QQuickItemPrivate::Children
                                                          | QQuickItemPrivate::Parent;
@@ -232,3 +234,5 @@ void QQuickViewController::onSceneGraphInvalidated()
 
     m_view->setVisible(false);
 }
+
+QT_END_NAMESPACE

src/webview/qwebviewinterface_p.h

@@ -82,4 +82,6 @@ public:
                                       int callbackId) = 0;
 };
 
+QT_END_NAMESPACE
+
 #endif // QWEBVIEWINTERFACE_H