Fix compilation of opList-based DDL implementation

Change-Id: Id8d034d85e0d4e67573ae13295fbbac634d366c3
Reviewed-on: https://skia-review.googlesource.com/107180
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
1 file changed