Roll pdfium to 59dffb68f07c7ce583285a23ad580b768ce3cd3e

Roll pdfium to 59dffb68f07c7ce583285a23ad580b768ce3cd3e

59dffb6 Fix new third_party/BUILD.gn to use the right build config.
06b087a Set the freetype options missing in the recent update.
b3a3230 Add the license back to ftmodule.h after the freetype 2.5.4 upgrade.
a09d50d Transform font size to user space for valid text size comparison.
e4fc5ce Update freetype to 2.5.4.

BUG=407341, 438441, 444243
TBR=tsepez@chromium.org

Committed: https://crrev.com/43a66cb1bff61ab967d767160287c0d9129128b8
Cr-Commit-Position: refs/heads/master@{#309342}

[Lei Zhang, 2014-12-20 03:41:18]

o/~ One more time, let's do it again. o/~

[Lei Zhang, 2014-12-20 03:41:20]

The CQ bit was checked by thestig@chromium.org

[commit-bot: I haz the power, 2014-12-20 03:41:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/815353002/1

[commit-bot: I haz the power, 2014-12-20 03:49:40]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-12-20 03:49:41]

Try jobs failed on following builders:
  linux_chromium_gn_dbg on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  linux_chromium_gn_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[Lei Zhang, 2014-12-20 05:28:22]

The CQ bit was checked by thestig@chromium.org

[commit-bot: I haz the power, 2014-12-20 05:29:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/815353002/20001

[commit-bot: I haz the power, 2014-12-20 06:28:52]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2014-12-20 06:29:38]

Patchset 2 (id:??) landed as
https://crrev.com/43a66cb1bff61ab967d767160287c0d9129128b8
Cr-Commit-Position: refs/heads/master@{#309342}

[Michael Achenbach, 2014-12-20 15:57:47]

A revert of this CL (patchset #2 id:20001) has been created in
https://codereview.chromium.org/821543002/ by machenbach@chromium.org.

The reason for reverting is: Breaks compilation on Win8 GN:
http://build.chromium.org/p/chromium.win/buildstatus?builder=Win8%20GN&number....