Added two new functions to expose pdfium functionality to the
to-be-created N-up conversion mojo service.
ConvertPdfPagesToNupPdf will take multiple PDF pages and import them
into a N-up PDF.
ConvertPdfDocumentToNupPdf will take an entire PDF document and convert
it to a N-up PDF document.
In printing, 2-up, 3-up, or more generally N-up refers to a page
layout strategy in which multiple pages are composited onto a
single page.
Bug: 775999
Change-Id: I11edc90ee717fcb295a35e3784f4ed4e72ae8117
Reviewed-on: https://chromium-review.googlesource.com/1134484
Commit-Queue: Shirleen Lou <xlou@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577052}
71c45c8975