Utils: Merge FilterLineEdit into FancyLineEdit

Change-Id: Ic53836dade3985c36b0f6767e43b5af0ddb80d72
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>

src/libs/utils/fancylineedit.h

@@ -103,14 +103,19 @@ public:
     // Sets a completer that is not a history completer.
     void setSpecialCompleter(QCompleter *completer);
 
+    // Enables fitering
+    void setFiltering(bool on);
+
 signals:
     void buttonClicked(Utils::FancyLineEdit::Side side);
     void leftButtonClicked();
     void rightButtonClicked();
+    void filterChanged(const QString &);
 
 private slots:
     void checkButtons(const QString &);
     void iconClicked();
+    void slotTextChanged(); // For filtering.
 
 protected:
     void resizeEvent(QResizeEvent *e);