Vcs: Use FilePath in IVersionControl API

Adapt first level of users.

Change-Id: Ifcd7bff45631ff3b9e26a9e3176daa6cf0cf2e56
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/vcsbase/vcsbaseeditor.cpp

@@ -329,7 +329,8 @@ QString ChangeTextCursorHandler::currentContents() const
 
 void ChangeTextCursorHandler::slotDescribe()
 {
-    emit editorWidget()->describeRequested(editorWidget()->source(), m_currentChange);
+    emit editorWidget()->describeRequested(FilePath::fromString(editorWidget()->source()),
+                                           m_currentChange);
 }
 
 void ChangeTextCursorHandler::slotCopyRevision()