use QT_BEGIN_NAMESPACE instead of QT_FORWARD_DECLARE_CLASS

Less confusing to the highlighter.

Change-Id: I1c5f232da42b18d43f6c14b5907eb8feb48de2b4
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/help/helpplugin.h

@@ -37,11 +37,13 @@
 #include <QMap>
 #include <QStringList>
 
-QT_FORWARD_DECLARE_CLASS(QAction)
-QT_FORWARD_DECLARE_CLASS(QComboBox)
-QT_FORWARD_DECLARE_CLASS(QMenu)
-QT_FORWARD_DECLARE_CLASS(QToolButton)
-QT_FORWARD_DECLARE_CLASS(QUrl)
+QT_BEGIN_NAMESPACE
+class QAction;
+class QComboBox;
+class QMenu;
+class QToolButton;
+class QUrl;
+QT_END_NAMESPACE
 
 namespace Core {
 class IMode;

src/plugins/help/searchwidget.h

@@ -38,10 +38,12 @@
 
 #include <QWidget>
 
-QT_FORWARD_DECLARE_CLASS(QHelpSearchEngine)
-QT_FORWARD_DECLARE_CLASS(QHelpSearchResultWidget)
-QT_FORWARD_DECLARE_CLASS(QMouseEvent)
-QT_FORWARD_DECLARE_CLASS(QUrl)
+QT_BEGIN_NAMESPACE
+class QHelpSearchEngine;
+class QHelpSearchResultWidget;
+class QMouseEvent;
+class QUrl;
+QT_END_NAMESPACE
 
 namespace Help {
 namespace Internal {

src/plugins/help/xbelsupport.h

@@ -36,8 +36,10 @@
 #include <QIcon>
 #include <QXmlStreamReader>
 
-QT_FORWARD_DECLARE_CLASS(QIODevice)
-QT_FORWARD_DECLARE_CLASS(QStandardItem)
+QT_BEGIN_NAMESPACE
+class QIODevice;
+class QStandardItem;
+QT_END_NAMESPACE
 
 class BookmarkModel;
 

src/plugins/projectexplorer/profileinformationconfigwidget.h

@@ -35,8 +35,10 @@
 
 #include "profileconfigwidget.h"
 
-QT_FORWARD_DECLARE_CLASS(QComboBox)
-QT_FORWARD_DECLARE_CLASS(QPushButton)
+QT_BEGIN_NAMESPACE
+class QComboBox;
+class QPushButton;
+QT_END_NAMESPACE
 
 namespace Utils { class PathChooser; }
 

src/plugins/qtsupport/qtversionfactory.h

@@ -39,8 +39,10 @@
 #include <QObject>
 #include <QVariantMap>
 
-QT_FORWARD_DECLARE_CLASS(QSettings)
-QT_FORWARD_DECLARE_CLASS(ProFileEvaluator)
+QT_BEGIN_NAMESPACE
+class QSettings;
+class ProFileEvaluator;
+QT_END_NAMESPACE
 
 namespace QtSupport {
 
@@ -49,6 +51,7 @@ class BaseQtVersion;
 class QTSUPPORT_EXPORT QtVersionFactory : public QObject
 {
     Q_OBJECT
+
 public:
     explicit QtVersionFactory(QObject *parent = 0);
     ~QtVersionFactory();
@@ -66,5 +69,6 @@ public:
     static BaseQtVersion *createQtVersionFromLegacySettings(const Utils::FileName &qmakePath, int id, QSettings *s);
 };
 
-}
+} // namespace QtSupport
+
 #endif // QTVERSIONFACTORY_H