ProjectManager: Return FilePaths from ProjectImporter::importCandidates

Proliferates FilePath use a bit further. Actual changes to the
individual importers are left for further patches.

Change-Id: Ie7c6b2e3f4ac7d0eca6d2f56d30fb23354bb404b
Reviewed-by: Cristian Adam <cristian.adam@qt.io>

src/plugins/mesonprojectmanager/project/mesonprojectimporter.cpp

@@ -16,7 +16,7 @@ MesonProjectImporter::MesonProjectImporter(const Utils::FilePath &path)
     : QtSupport::QtProjectImporter{path}
 {}
 
-QStringList MesonProjectImporter::importCandidates()
+Utils::FilePaths MesonProjectImporter::importCandidates()
 {
     //TODO, this can be done later
     return {};

src/plugins/mesonprojectmanager/project/mesonprojectimporter.h

@@ -3,21 +3,18 @@
 
 #pragma once
 
-#include "exewrappers/mesonwrapper.h"
-
 #include <projectexplorer/buildinfo.h>
 #include <projectexplorer/kit.h>
 
 #include <qtsupport/qtprojectimporter.h>
 
-namespace MesonProjectManager {
-namespace Internal {
+namespace MesonProjectManager::Internal {
 
 class MesonProjectImporter final : public QtSupport::QtProjectImporter
 {
 public:
     MesonProjectImporter(const Utils::FilePath &path);
-    QStringList importCandidates() final;
+    Utils::FilePaths importCandidates() final;
 
 private:
     // importPath is an existing directory at this point!
@@ -32,5 +29,4 @@ private:
     void deleteDirectoryData(void *directoryData) const final;
 };
 
-} // namespace Internal
-} // namespace MesonProjectManager
+} // MesonProjectManager::Internal