[DO NOT MERGE] Allow multiple toasts for the focused app

    boolean canAddToastWindowForUid(int uid) {

        // We allow one toast window per UID being shown at a time.

        WindowList windows = getWindowList();

        final int windowCount = windows.size();

        // Also if the app is focused adding more than one toast at

        // a time for better backwards compatibility.

        boolean alreadyHasToastWindow = false;

        final int windowCount = mWindows.size();

        for (int i = 0; i < windowCount; i++) {

            WindowState window = windows.get(i);

            if (window.mAttrs.type == TYPE_TOAST && window.mOwnerUid == uid

            final WindowState window = mWindows.get(i);

            if (window.isFocused() && window.getOwningUid() == uid) {

                return true;

            }

            if (window.mAttrs.type == TYPE_TOAST && window.getOwningUid() == uid

                    && !window.isRemovedOrHidden()) {

                return false;

                alreadyHasToastWindow = true;

            }

        }

        return true;

        return !alreadyHasToastWindow;

    }

    void scheduleToastWindowsTimeoutIfNeededLocked(WindowState oldFocus,