libcamera: base: thread: Make removeMessages() public

Sometimes there is a need to remove pending messages of an object. For example,
when the main purpose of a thread is to carry out work asynchronously using
invoke messages, then there might be a need to stop processing because some
kind of state has changed. This can be done in two main ways: flushing messages
or removing them. This changes enables the second option, which is useful if
the effects of the pending messages are no longer desired.

Signed-off-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

include/libcamera/base/thread.h

@@ -50,6 +50,7 @@ public:
 
 	void dispatchMessages(Message::Type type = Message::Type::None,
 			      Object *receiver = nullptr);
+	void removeMessages(Object *receiver);
 
 protected:
 	int exec();
@@ -64,7 +65,6 @@ private:
 	void setThreadAffinityInternal();
 
 	void postMessage(std::unique_ptr<Message> msg, Object *receiver);
-	void removeMessages(Object *receiver);
 
 	friend class Object;
 	friend class ThreadData;