ClangPchManager: Fix path for excluded include files

Still used the old approach but now it is using the new one.

Change-Id: I4bf4da3a5d41d46afff261f3d77bd9190737038a
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/tools/clangrefactoringbackend/source/clangtool.cpp

@@ -57,7 +57,7 @@ void ClangTool::addUnsavedFiles(const V2::FileContainers &unsavedFiles)
     m_unsavedFileContents.reserve(m_unsavedFileContents.size() + unsavedFiles.size());
 
     auto convertToUnsavedFileContent = [](const V2::FileContainer &unsavedFile) {
-        return UnsavedFileContent{unsavedFile.filePath.clone(),
+        return UnsavedFileContent{NativeFilePath{unsavedFile.filePath},
                                   unsavedFile.unsavedFileContent.clone()};
     };
 

src/tools/clangrefactoringbackend/source/clangtool.h

@@ -55,12 +55,12 @@ struct FileContent
 
 struct UnsavedFileContent
 {
-    UnsavedFileContent(FilePath &&filePath, Utils::SmallString &&content)
+    UnsavedFileContent(NativeFilePath &&filePath, Utils::SmallString &&content)
         : filePath(std::move(filePath))
         , content(std::move(content))
     {}
 
-    FilePath filePath;
+    NativeFilePath filePath;
     Utils::SmallString content;
 };