Roll PDFium from 4f8b26512bd3 to 07ef29a27cde (13 revisions)

https://pdfium.googlesource.com/pdfium.git/+log/4f8b26512bd3..07ef29a27cde

2022-09-10 thestig@chromium.org Add a libcxx_revision presubmit check.
2022-09-10 thestig@chromium.org Revert "Use DataVector in CFX_FontMapper and CFX_FontMgr."
2022-09-10 thestig@chromium.org Revert "Use DataVector in CFX_MemoryStream."
2022-09-10 thestig@chromium.org Fix member destruction order in CPDF_StreamAcc.
2022-09-10 tsepez@chromium.org Return retained object from CPDF_Dictionary::GetStreamFor().
2022-09-10 nigi@chromium.org Add a pixel test for incorrect text rendering on macOS.
2022-09-10 tsepez@chromium.org Add CPDF_Array::GetNumberAt() helper method
2022-09-10 tsepez@chromium.org Rename CPDF_Array::GetNumberAt() to GetFloatAt().
2022-09-09 tsepez@chromium.org Add CPDF_Dictionary::GetNumberFor() helper method
2022-09-09 tsepez@chromium.org Rename CPDF_Dictionary::GetNumberFor() to GetFloatFor().
2022-09-09 nigi@chromium.org Roll buildtools and libc++
2022-09-09 tsepez@chromium.org Use CPDF_DictionaryLocker in CPDF_GenerateAP
2022-09-09 tsepez@chromium.org Make Dictionary and Array lockers more useful

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/pdfium-autoroll
Please CC pdfium-deps-rolls@chromium.org on the revert to ensure that a human
is aware of the problem.

To file a bug in PDFium: https://bugs.chromium.org/p/pdfium/issues/entry
To file a bug in Chromium: https://bugs.chromium.org/p/chromium/issues/entry

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Bug: chromium:1356149,chromium:1361849
Tbr: pdfium-deps-rolls@chromium.org
Change-Id: I50276babc2b41c102580dfd52bf2898d9c0a0955
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3887710
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1045513}