Add missing include (to get std::min on MSVC)

Change-Id: I2ca5ef0df9276e740a78b08e6f51bcdb445fd29b
Reviewed-on: https://skia-review.googlesource.com/105985
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
1 file changed