Roll src/third_party/pdfium/ 7132ee359..9b8b217e6 (7 commits)

https://pdfium.googlesource.com/pdfium.git/+log/7132ee35925f..9b8b217e6f8f

$ git log 7132ee359..9b8b217e6 --date=short --no-merges --format='%ad %ae %s'
2018-04-25 tsepez Replace reinterpret_cast with static_cast where possible
2018-04-25 hnakashima Make XFA Caret become immediately visible when moved.
2018-04-25 rharrison Use local for return value in factory method
2018-04-25 rharrison Don't store CE (comment extension) block data when decoding GIF
2018-04-25 thestig Use a bool in FindBit() in the fax codec.
2018-04-25 thestig Add PostScript PASSTHROUGH options to FPDF_SetPrintMode().
2018-04-25 thestig Use PredictorType in more places.

Created with:
  roll-dep src/third_party/pdfium
BUG=chromium:835608,chromium:833168


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: Ib59b785d5d3425a110c42e7af4b7eb1533232813
Reviewed-on: https://chromium-review.googlesource.com/1029189Reviewed-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@{#553925}

DEPS

@@ -114,7 +114,7 @@ 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': '7132ee35925f4d83526aa72518ead091ea01cc5f',
+  'pdfium_revision': '9b8b217e6f8f2ff03b09d6075e689804928c7b3c',
   # 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.