ProjectExplorer: Remove internal classes from exported headers.

src/plugins/projectexplorer/session.cpp

@@ -28,6 +28,7 @@
 **************************************************************************/
 
 #include "session.h"
+#include "sessionnodeimpl.h"
 
 #include "project.h"
 #include "projectexplorer.h"
@@ -111,7 +112,6 @@ private:
 using namespace ProjectExplorer;
 using namespace ProjectExplorer::Internal;
 
-
 void SessionFile::sessionLoadingProgress()
 {
     future.setProgressValue(future.progressValue() + 1);
@@ -305,28 +305,6 @@ void SessionFile::clearFailedProjectFileNames()
     m_failedProjects.clear();
 }
 
-Internal::SessionNodeImpl::SessionNodeImpl(SessionManager *manager)
-        : ProjectExplorer::SessionNode(manager->currentSession(), manager)
-{
-    setFileName("session");
-}
-
-void Internal::SessionNodeImpl::addProjectNode(ProjectNode *projectNode)
-{
-    addProjectNodes(QList<ProjectNode*>() << projectNode);
-}
-
-void Internal::SessionNodeImpl::removeProjectNode(ProjectNode *projectNode)
-{
-    removeProjectNodes(QList<ProjectNode*>() << projectNode);
-}
-
-void Internal::SessionNodeImpl::setFileName(const QString &fileName)
-{
-    setPath(fileName);
-    setDisplayName(fileName);
-}
-
 /* --------------------------------- */
 
 SessionManager::SessionManager(QObject *parent)