Roll src/third_party/pdfium 2aa7e8cbc413..59f7623f1c0b (3 commits)

https://pdfium.googlesource.com/pdfium.git/+log/2aa7e8cbc413..59f7623f1c0b


git log 2aa7e8cbc413..59f7623f1c0b --date=short --no-merges --format='%ad %ae %s'
2018-11-15 thestig@chromium.org Avoid overloading in IFX_SeekableWriteStream.
2018-11-15 thestig@chromium.org Avoid overloading in IFX_SeekableReadStream.
2018-11-15 thestig@chromium.org Remove IFX_SeekableStream::Flush().


Created with:
  gclient setdep -r src/third_party/pdfium@59f7623f1c0b

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: I0708999108aa7e7d2fc7f52526717333d082091e
Reviewed-on: https://chromium-review.googlesource.com/c/1338150Reviewed-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@{#608582}

DEPS

@@ -140,7 +140,7 @@ 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': '2aa7e8cbc413a004c9395b2dd3afbf8b3d7d5fd9',
+  'pdfium_revision': '59f7623f1c0b0414006d520360b5f7624a1bd508',
   # 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.