Aryan dae75842fc Add APIs to read and write attachment descriptions ...

This CL introduces FPDFAttachment_GetDescription() and
FPDFAttachment_SetDescription() to allow embedders to retrieve and
modify the "/Desc" key within an embedded file's file specification
dictionary.

To support these new public APIs, this CL updates CPDF_FileSpec with
helper methods to access its underlying dictionary directly, both in
const and mutable contexts.

Bug: 42270947
Change-Id: Icd917d4ebbef4682a588e99fdefc85f383d24d48
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/151150
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Andy Phan <andyphan@chromium.org>

2026-07-13 11:02:03 -07:00

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