GitLab

https://pdfium.googlesource.com/pdfium.git/+log/cff6cfc61523..4414ee21a06e

FPDFAttachment_GetFile() API has changed in PDFium and it no longer
returns the file size for attachments. Manually roll so we can create
a helper function GetAttachmentFileLengthInBytes(), which is the caller
of the newly updated FPDFAttachment_GetFile() API to return the file
size at the same time.

Created with:
  roll-dep src/third_party/pdfium

Change-Id: I4c169366ac790a2a010dc0bdd7021774dbf4b914
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2240347Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Daniel Hosseinian <dhoss@chromium.org>
Commit-Queue: Hui Yingst <nigi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#777202}