Roll src/third_party/pdfium/ 213f01205..bf9104d58 (15 commits)

https://pdfium.googlesource.com/pdfium.git/+log/213f01205a77..bf9104d5825d

$ git log 213f01205..bf9104d58 --date=short --no-merges --format='%ad %ae %s'
2017-03-30 tsepez vswprintf() part 1: move code, create helper function.
2017-03-30 dsinclair Move CXFA_XMLParser to CFDE_XMLParser
2017-03-30 thestig Fix some nits in the javascript util code.
2017-03-30 dsinclair Add some calls to MakeUnique
2017-03-30 dsinclair Move core/fxcrt XML files to core/fxcrt/xml
2017-03-30 tsepez Avoid one more instance of the anti-pattern in 706346.
2017-03-30 npm Libtiff security upstream patches
2017-03-30 dsinclair Rename tto/fde_textout to cfde_textout
2017-03-30 dsinclair Move CFX files into fxcrt
2017-03-30 thakis Revert "Enable Wshift-negative-value in PDFium."
2017-03-30 tsepez Protect against premature mask destruction in CFX_ClipRgn::IntersectRect
2017-03-30 drott Remove unnecessary FreeType include.
2017-03-30 dsinclair Rename FDE files to match contents.
2017-03-30 drott Fix Chromium XFA build
2017-03-30 dsinclair Rename fgas_stream to ifgas_stream

Created with:
  roll-dep src/third_party/pdfium
BUG=507717,706346,706824,706824

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, see:
http://www.chromium.org/developers/tree-sheriffs/sheriff-details-chromium#TOC-Failures-due-to-DEPS-rolls

TBR=dsinclair@chromium.org

Review-Url: https://codereview.chromium.org/2787763003
Cr-Commit-Position: refs/heads/master@{#460917}