DiffEditor: Move some methods into protected section

They are used only in subclasses.

Task-number: QTCREATORBUG-23242
Change-Id: I0aa037c7499a9a552e351fbd36885ce9b736656b
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/diffeditor/diffeditorcontroller.h

@@ -30,12 +30,9 @@ public:
     explicit DiffEditorController(Core::IDocument *document);
 
     void requestReload();
-    bool isReloading() const;
 
     Utils::FilePath workingDirectory() const;
     void setWorkingDirectory(const Utils::FilePath &directory);
-    int contextLineCount() const;
-    bool ignoreWhitespace() const;
 
     enum PatchOption {
         NoOption = 0,
@@ -60,6 +57,10 @@ signals:
                                const ChunkSelection &selection);
 
 protected:
+    bool isReloading() const;
+    int contextLineCount() const;
+    bool ignoreWhitespace() const;
+
     // Core functions:
     void setReloadRecipe(const Tasking::Group &recipe) { m_reloadRecipe = recipe; }
     void setDiffFiles(const QList<FileData> &diffFileList);