Roll src/third_party/pdfium/ fe9d640ea..df4f30eaa (8 commits)

https://pdfium.googlesource.com/pdfium.git/+log/fe9d640ea90c..df4f30eaaa46

$ git log fe9d640ea..df4f30eaa --date=short --no-merges --format='%ad %ae %s'
2017-12-14 dsinclair Add types to the CXFA_Node::Get*{Child|Sibling}* methods
2017-12-14 dsinclair Change CXFA_Node::GetChild to return proper types
2017-12-14 rharrison Reduce XFA image fuzzer size limit to 64MB
2017-12-14 dsinclair Fold CXFA_ScriptData into CXFA_Script
2017-12-14 dsinclair Fold CXFA_SubmitData into CXFA_Submit
2017-12-14 dsinclair Fold CXFA_TextData into CXFA_Text
2017-12-14 dsinclair Fold CXFA_ValueData into CXFA_Value
2017-12-14 dsinclair Fold CXFA_ValidateData into CXFA_Validate

Created with:
  roll-dep src/third_party/pdfiumBUG=794351


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

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: I5d6fcd65e6263a4523da381a114de118e0e1b2c3
Reviewed-on: https://chromium-review.googlesource.com/827787
Reviewed-by: <pdfium-deps-roller@chromium.org>
Commit-Queue: <pdfium-deps-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524211}

DEPS

@@ -98,7 +98,7 @@ 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': 'fe9d640ea90cfccac39b6475dad9df62072542fc',
+  'pdfium_revision': 'df4f30eaaa469c3703118f89579d506209a49237',
   # 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.