GitLab

https://pdfium.googlesource.com/pdfium.git/+/75f84a56 changed the PDFium
rendering APIs to let callers better control how forms are drawn. The
path for low quality printing / print as image never got updated.

BUG=825985,pdfium:594

Change-Id: I36658f651da3911034648651c6118acbd4050712
Reviewed-on: https://chromium-review.googlesource.com/985133Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548344}