QuickFix: Clean up RefactoringChanges and add missing functionality.

* Can change files without opening an editor.
* Can open an editor without changing a file.
* Default to reindenting new files.
* Allow reading a file temporarily to access document and text.

src/plugins/cppeditor/cpprefactoringchanges.h

@@ -53,6 +53,9 @@ public:
     CPlusPlus::Document::Ptr document(const QString &fileName) const;
     const CPlusPlus::LookupContext &context() const;
 
+private:
+    virtual void indentSelection(const QTextCursor &selection) const;
+
 private:
     CPlusPlus::Document::Ptr m_thisDocument;
     CPlusPlus::Snapshot m_snapshot;