Merge "Stop splitting mouse events."

        // Figure out whether splitting will be allowed for this window.

        if (newTouchedWindowHandle != nullptr

                && newTouchedWindowHandle->getInfo()->supportsSplitTouch()) {

            // New window supports splitting.

            isSplit = true;

            // New window supports splitting, but we should never split mouse events.

            isSplit = !isFromMouse;

        } else if (isSplit) {

            // New window does not support splitting but we have already split events.

            // Ignore the new window.