tree 94197f17ed3ed2982b39f4f645b4be746c657492
parent 31136552bc0ca1848addede014d518a5ef6be646
author Lei Zhang <thestig@chromium.org> 1558027934 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1558027934 +0000

Make FPDF_StructElement_GetTitle() handle UTF-16BE correctly.

Modify tagged_alt_text.pdf and its source file to add a title with
UTF-16BE encoding. Then enhance FPDFStructTreeEmbedderTest to read out
the value. To make the test pass, get the title from its dictionary as
Unicode text instead of a ByteString.

Also change CPDF_StructElement to stop storing the title, and get the
value from the dictionary directly in its GetTitle() method as needed.
Along the way, further make the code more consistent by removing
checks that assume CPDF_StructElement::GetDict() can return nullptr.

BUG=pdfium:1298

Change-Id: I8fc89b88315181dc4770c9cc24b4aa292b54d068
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/54570
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>