Fix iOS build

TBR=rmistry@google.com

BUG=skia:

Change-Id: I5fc38227138d5433b2435d9dab13ec5ade9a26b8
Reviewed-on: https://skia-review.googlesource.com/6235
Reviewed-by: Matt Sarett <msarett@google.com>
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>
1 file changed