CppEditor: Simplify CppRefactoringChanges class

Remove unneeded methods from API.

src/plugins/cppeditor/cppquickfix.cpp

@@ -102,7 +102,7 @@ CppQuickFixOperation::~CppQuickFixOperation()
 
 void CppQuickFixOperation::perform()
 {
-    CppRefactoringChanges refactoring(_state.document(), _state.snapshot());
+    CppRefactoringChanges refactoring(_state.snapshot());
     CppRefactoringFile current = refactoring.file(fileName());
 
     performChanges(&current, &refactoring);

src/plugins/cppeditor/cpprefactoringchanges.cpp

@@ -41,31 +41,19 @@ using namespace CppEditor;
 using namespace CPlusPlus;
 using namespace Utils;
 
-CppRefactoringChanges::CppRefactoringChanges(const Document::Ptr &thisDocument, const Snapshot &snapshot)
-    : m_thisDocument(thisDocument)
-    , m_snapshot(snapshot)
-    , m_context(m_thisDocument, m_snapshot)
+CppRefactoringChanges::CppRefactoringChanges(const Snapshot &snapshot)
+    : m_snapshot(snapshot)
     , m_modelManager(CppTools::CppModelManagerInterface::instance())
 {
     Q_ASSERT(m_modelManager);
     m_workingCopy = m_modelManager->workingCopy();
 }
 
-Document::Ptr CppRefactoringChanges::thisDocument() const
-{
-    return m_thisDocument;
-}
-
 const Snapshot &CppRefactoringChanges::snapshot() const
 {
     return m_snapshot;
 }
 
-const LookupContext &CppRefactoringChanges::context() const
-{
-    return m_context;
-}
-
 CppRefactoringFile CppRefactoringChanges::file(const QString &fileName)
 {
     return CppRefactoringFile(fileName, this);

src/plugins/cppeditor/cpprefactoringchanges.h

@@ -82,13 +82,9 @@ private:
 class CPPEDITOR_EXPORT CppRefactoringChanges: public TextEditor::RefactoringChanges
 {
 public:
-    CppRefactoringChanges(const CPlusPlus::Document::Ptr &thisDocument,
-                          const CPlusPlus::Snapshot &snapshot);
+    CppRefactoringChanges(const CPlusPlus::Snapshot &snapshot);
 
-    CPlusPlus::Document::Ptr thisDocument() const;
     const CPlusPlus::Snapshot &snapshot() const;
-    const CPlusPlus::LookupContext &context() const;
-
     CppRefactoringFile file(const QString &fileName);
 
 private: