Roll src/third_party/pdfium 1605351382db..4bf804086c4f (4 commits)

https://pdfium.googlesource.com/pdfium.git/+log/1605351382db..4bf804086c4f


git log 1605351382db..4bf804086c4f --date=short --no-merges --format='%ad %ae %s'
2018-09-20 thestig@chromium.org Roll testing/corpus/ 2ddedb263..19feefee4 (1 commit)
2018-09-20 thestig@chromium.org Validate some image data in CPDF_Image::InitJPEG().
2018-09-20 thestig@chromium.org Use pdfium::Optional with FPDF_Doc_Save().
2018-09-20 thestig@chromium.org Change CFX_FixedBufGrow to take a size_t.


Created with:
  gclient setdep -r src/third_party/pdfium@4bf804086c4f

The AutoRoll server is located here: https://autoroll.skia.org/r/pdfium-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


TBR=dsinclair@chromium.org

Change-Id: I73411b5d1adbe4914baf64e152077917cd9dd55d
Reviewed-on: https://chromium-review.googlesource.com/1236480Reviewed-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@{#592898}

DEPS

@@ -129,7 +129,7 @@ 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': '1605351382dbaa84cbf5affedf1f3b89897da793',
+  'pdfium_revision': '4bf804086c4f08c7d5959dd9c08d998b546bbc4b',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling openmax_dl
   # and whatever else without interference from each other.