Input: make VibrationInfo protected to allow implementors to use it

(cherry picked from commit 41a7d070957d7cbe24f1f0daa36e7d5f5318c1e5)

main/input_default.h

@@ -65,15 +65,6 @@ class InputDefault : public Input {
 
 	int mouse_from_touch_index;
 
-	struct VibrationInfo {
-		float weak_magnitude;
-		float strong_magnitude;
-		float duration; // Duration in seconds
-		uint64_t timestamp;
-	};
-
-	Map<int, VibrationInfo> joy_vibration;
-
 	struct SpeedTrack {
 
 		uint64_t last_tick;
@@ -186,6 +177,16 @@ private:
 	List<Ref<InputEvent> > accumulated_events;
 	bool use_accumulated_input;
 
+protected:
+	struct VibrationInfo {
+		float weak_magnitude;
+		float strong_magnitude;
+		float duration; // Duration in seconds
+		uint64_t timestamp;
+	};
+
+	Map<int, VibrationInfo> joy_vibration;
+
 public:
 	virtual bool is_key_pressed(int p_scancode) const;
 	virtual bool is_mouse_button_pressed(int p_button) const;