Roll PDFium to bring in:

Roll PDFium to bring in:

5898509 Test top-level Document JS properties.
2543607 Fix JPX image rendering that regressed due to several security fixes.
493f5c6 Fix an error 'Use-of-uninitialized-value in CPDF_Function::Call'
9f93baf Create run_javascript_tests.py
6e7ceb8 CPDF_Object() constructor should set its internal m_Type variable.

BUG=453723, 454280
TBR=tsepez@chromium.org

Committed: https://crrev.com/984bf74de879dde74718e1107fa945b944abd36c
Cr-Commit-Position: refs/heads/master@{#316305}

[Lei Zhang, 2015-02-13 20:22:48]

TBR

[Lei Zhang, 2015-02-13 20:22:52]

The CQ bit was checked by thestig@chromium.org

[commit-bot: I haz the power, 2015-02-13 20:23:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/928593002/1

[Tom Sepez, 2015-02-13 20:34:42]

lgtm

[commit-bot: I haz the power, 2015-02-13 22:11:31]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-13 22:12:09]

Patchset 1 (id:??) landed as
https://crrev.com/984bf74de879dde74718e1107fa945b944abd36c
Cr-Commit-Position: refs/heads/master@{#316305}