Help/Android: Compile with namespaced Qt

Task-number: QTCREATORBUG-24544
Change-Id: Id06cc623b8a0bfe365dda928cda52a97321732b2
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/android/androidservicewidget.h

@@ -29,8 +29,10 @@
 #include <QString>
 #include <QWidget>
 
+QT_BEGIN_NAMESPACE
 class QPushButton;
 class QTableView;
+QT_END_NAMESPACE
 
 namespace Android {
 namespace Internal {

src/plugins/help/filtersettingspage.h

@@ -32,7 +32,9 @@
 #ifndef HELP_NEW_FILTER_ENGINE
 #include "ui_filtersettingspage.h"
 #else
+QT_BEGIN_NAMESPACE
 class QHelpFilterSettingsWidget;
+QT_END_NAMESPACE
 #endif
 
 namespace Help {