Merge "Change clearEvents() to clear existing events rather than setting...

        // NOTE: we must save a reference to the current mEvents and then set it to to null,

        // otherwise clearing it would clear it in the receiving side if the service is also local.

        final List<ContentCaptureEvent> events = mEvents == null

                ? Collections.emptyList()

                : mEvents;

        mEvents = null;

                ? Collections.EMPTY_LIST

                : new ArrayList<>(mEvents);

        mEvents.clear();

        mLastComposingSpan.clear();

        return new ParceledListSlice<>(events);

    }