CMake: Introduce project importer for cmake projects

Change-Id: Ie215e1c3f0286f6d98d10865e2b0a16b01391cd5
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/cmakeprojectmanager/builddirmanager.h

@@ -86,13 +86,12 @@ signals:
     void dataAvailable() const;
     void errorOccured(const QString &err) const;
 
-protected:
-    const Utils::FileName workDirectory() const;
-
 private:
     void emitDataAvailable();
     void checkConfiguration();
 
+    const Utils::FileName workDirectory() const;
+
     void updateReaderType(std::function<void()> todo);
     void updateReaderData();