Fix --record in webpages_playback.py

NoTry: true
Bug: skia:8898
Change-Id: If05371b7935a9271a705fcc9edffad48aa51b4cc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/202951
Commit-Queue: Ravi Mistry <rmistry@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
1 file changed