Roll PDFium from e8bde89026d6 to 42aaf8bd7f23 (11 revisions)

https://pdfium.googlesource.com/pdfium.git/+log/e8bde89026d6..42aaf8bd7f23

2020-08-25 thestig@chromium.org Simplify CFX_Font's CharsetFontMap code.
2020-08-24 nigi@chromium.org Enable FPDFEditEmbedderTest.PathOnTopOfText for Skia/SkiaPaths.
2020-08-24 thestig@chromium.org Abstract some raw data tables in CFX_Font.
2020-08-24 thestig@chromium.org Simply _CheckIncludeOrder() presubmit check.
2020-08-24 tsepez@chromium.org Introduce class EmbedderTestEnvironment
2020-08-24 thestig@chromium.org Add ReverseCopy3Bytes() utility function.
2020-08-24 thestig@chromium.org Switch to memcpy()/std::fill()/std::swap() in image processing code.
2020-08-24 thestig@chromium.org Switch to memcpy()/memset() in image conversion code.
2020-08-24 thestig@chromium.org Remove dead code in CJpegContext.
2020-08-24 tsepez@chromium.org Introduce CFX_GEModule::PlatformIface::CreateDefaultSystemFontInfo().
2020-08-24 pdfium-autoroll@skia-public.iam.gserviceaccount.com Roll Code Coverage from af90718d311e to 2d8a12dca47a (2 revisions)

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 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/master/autoroll/README.md

Bug: None
Tbr: pdfium-deps-rolls@chromium.org
Change-Id: If9a1dc83ce19f2cc580d5041bc1f3ed74b5d2988
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2374346Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#801299}

DEPS

@@ -215,7 +215,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.
-  'pdfium_revision': 'e8bde89026d67ec34c1fbc729899b67aced3e93d',
+  'pdfium_revision': '42aaf8bd7f23e39e85c843d36f5a041870726279',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.