Roll src/third_party/pdfium 9d1193b591c5..ad6de6a08a66 (5 commits)

https://pdfium.googlesource.com/pdfium.git/+log/9d1193b591c5..ad6de6a08a66


git log 9d1193b591c5..ad6de6a08a66 --date=short --no-merges --format='%ad %ae %s'
2019-06-24 asweintraub@google.com Fix ClangTidy-Readability/Naming findings in core/fpdfapi.
2019-06-24 thestig@chromium.org Switch from vector to deque for another CXFA_FFDocView members.
2019-06-24 chinsenj@google.com Fix Heap-buffer-overflow caused by PDF_DataDecode() refactor
2019-06-24 asweintraub@google.com Fix 22 ClangTidy - Readability/Naming findings in fpdfsdk.
2019-06-24 asweintraub@google.com Fix 2 ClangTidy - Readability/Naming findings in core/fdrm


Created with:
  gclient setdep -r src/third_party/pdfium@ad6de6a08a66

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.



BUG=chromium:949425,chromium:977832
TBR=pdfium-deps-rolls@chromium.org

Change-Id: Ibae0cc2eab33d9fc235328820b0b550c81857887
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1674217Reviewed-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@{#671731}

DEPS

@@ -158,7 +158,7 @@ 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': '9d1193b591c5ac53cf1680c80692911f7dd26607',
+  'pdfium_revision': 'ad6de6a08a66b6310630abd09ecd6f9687c17234',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.