Roll src/third_party/pdfium/ da060ba10..710fa99b0 (4 commits)

https://pdfium.googlesource.com/pdfium.git/+log/da060ba107fb..710fa99b0bd2

$ git log da060ba10..710fa99b0 --date=short --no-merges --format='%ad %ae %s'
2018-05-25 thestig Mark CPDF_Object pointers in pattern code as const.
2018-05-25 dsinclair [xfa] Generate CXFA_EventParam.newText dynamically
2018-05-25 dsinclair [xfa] Add missing xfa.event.cancelAction property
2018-05-25 dsinclair [xfa] Clamp selStart, selEnd values in CJX_EventPseudoModel

Created with:
  roll-dep src/third_party/pdfium
BUG=chromium:1066,chromium:1066,chromium:1066


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: I81ca482708c0a39b45eadf412a89ce864199a1ad
Reviewed-on: https://chromium-review.googlesource.com/1073635Reviewed-by: pdfium-chromium-autoroll <pdfium-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: pdfium-chromium-autoroll <pdfium-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#561981}

DEPS

@@ -120,7 +120,7 @@ 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': 'da060ba107fba8ef679393b5622b6de2f4790379',
+  'pdfium_revision': '710fa99b0bd26e6761c4481b4b9b6d26d2954c3e',
   # 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.