Roll src/third_party/pdfium/ d3b0f7cc7..303f9a3af (7 commits)

https://pdfium.googlesource.com/pdfium.git/+log/d3b0f7cc78e6..303f9a3afc4a

$ git log d3b0f7cc7..303f9a3af --date=short --no-merges --format='%ad %ae %s'
2018-05-02 dsinclair [xml] Simplify the CFX_XMLParser parse methods
2018-05-02 dsinclair [xml] Rename CFX_XMLParser::ParseTextChar
2018-05-02 hnakashima CFWL_MonthCalendar::GetTodayText() includes "Today" string.
2018-05-02 hnakashima Pass DPI as CFX_Size in XFA_DrawImage.
2018-05-02 dsinclair Cleanup XFA document properly on failed load
2018-05-02 dsinclair Add a CFX_XMLDocument class.
2018-05-02 hnakashima Remove out params from CalculateAccWidthAndHeight. Return CFX_Size.

Created with:
  roll-dep src/third_party/pdfium
BUG=chromium:837578


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: Ia4cf7f68b647c08a999794d10f270247e6e803fa
Reviewed-on: https://chromium-review.googlesource.com/1040358Reviewed-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@{#555532}

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': 'd3b0f7cc78e6a143e00e5eb653b3e7c918054426',
+  'pdfium_revision': '303f9a3afc4a86147213d4ac57894480485090a2',
   # 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.