Tracker: Replace custom LooperAutoLocker with AutoLocker<BLooper>.

src/kits/tracker/Utilities.cpp

@@ -2023,7 +2023,7 @@ PositionPassingMenuItem::Invoke(BMessage* message)
 	// use the window position only, if the item was invoked from the menu
 	// menu->Window() points to the window the item was invoked from
 	if (dynamic_cast<BContainerWindow*>(menu->Window()) == NULL) {
-		LooperAutoLocker lock(menu);
+		AutoLocker<BLooper> lock(menu->Looper());
 		if (lock.IsLocked()) {
 			BPoint invokeOrigin(menu->Window()->Frame().LeftTop());
 			clone.AddPoint("be:invoke_origin", invokeOrigin);

src/kits/tracker/Utilities.h

@@ -348,36 +348,6 @@ private:
 };
 
 
-class LooperAutoLocker {
-public:
-	LooperAutoLocker(BHandler* handler)
-	:	fHandler(handler),
-		fHasLock(handler->LockLooper())
-	{
-	}
-
-	~LooperAutoLocker()
-	{
-		if (fHasLock)
-			fHandler->UnlockLooper();
-	}
-
-	bool operator!() const
-	{
-		return !fHasLock;
-	}
-
-	bool IsLocked() const
-	{
-		return fHasLock;
-	}
-
-private:
-	BHandler* fHandler;
-	bool fHasLock;
-};
-
-
 class ShortcutFilter : public BMessageFilter {
 public:
 	ShortcutFilter(uint32 shortcutKey, uint32 shortcutModifier,