message: RemoveLastPathComponent return type change got lost in a merge.
diff: @@ -532,7 +532,14 @@ public:
  void AppendPathComponent(llvm::StringRef component);
  void AppendPathComponent(const FileSpec &new_path);
  - void RemoveLastPathComponent();
  + //------------------------------------------------------------------
  + /// Removes the last path component by replacing the current path with its
  + /// parent. When the current path has no parent, this is a no-op.
  + ///
  + /// @return
  + /// A boolean value indicating whether the path was updated.
  + //------------------------------------------------------------------
  + bool RemoveLastPathComponent();
  ConstString GetLastPathComponent() const;
  