Roll src/third_party/pdfium 0789714..a7b65b8 (7 commits)

https://pdfium.googlesource.com/pdfium.git/+log/0789714..a7b65b8


git log 0789714..a7b65b8 --date=short --no-merges --format='%ad %ae %s'
2018-05-30 rharrison@chromium.org Migrate coverage_report.py to use upstream Chromium scripts
2018-05-30 npm@chromium.org Roll third_party/freetype/src/ 9e345c911..d45d4b97e (27 commits)
2018-05-30 thestig@chromium.org Remove dead code in various write function.
2018-05-30 thestig@chromium.org Add pixel tests for PDFs that use generation numbers.
2018-05-30 thestig@chromium.org Exclude certain colorspace types for calculating transparency backdrop color.
2018-05-30 thomasanderson@chromium.org Remove manual references to exe_and_shlib_deps
2018-05-30 tsepez@chromium.org Make common page base class for XFA and non-XFA.

Created with:
  gclient setdep -r src/third_party/pdfium@a7b65b8

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.



BUG=chromium:847346,chromium:845700

TBR=dsinclair@chromium.org

Change-Id: I040d66e3a3a9344b7d3858c743a524f40ccd5a76
Reviewed-on: https://chromium-review.googlesource.com/1079847Reviewed-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@{#563070}

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': '0789714191b4b3109f7d5c415663090018e27577',
+  'pdfium_revision': 'a7b65b85bba95fb8757cbd407fd38d71304128ab',
   # 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.