Show warning with continue/cancel in case of many search results

Task-number: QTCREATORBUG-6116
Change-Id: I57a66b8989f1cc4137b02df370704dfe43d392ac
Reviewed-by: Robert Löhning <robert.loehning@nokia.com>
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

src/plugins/cpptools/cppfindreferences.h

@@ -89,6 +89,7 @@ private Q_SLOTS:
     void displayResults(int first, int last);
     void searchFinished();
     void cancel();
+    void setPaused(bool paused);
     void openEditor(const Find::SearchResultItem &item);
     void onReplaceButtonClicked(const QString &text, const QList<Find::SearchResultItem> &items);
     void searchAgain();