Remove even more const casting from core.

Remove even more const casting from core.

Make the return types/arguments match reality.

Committed: https://pdfium.googlesource.com/pdfium/+/6aac8a822ef227b80173f23ea3169b28a6712bba

[Tom Sepez, 2016-06-08 20:50:52]

tsepez@chromium.org changed reviewers:
+ dsinclair@chromium.org

[Tom Sepez, 2016-06-08 20:50:53]

Dan, pls review.

[dsinclair, 2016-06-08 20:51:52]

The CQ bit was checked by dsinclair@chromium.org

[dsinclair, 2016-06-08 20:51:52]

lgtm

[commit-bot: I haz the power, 2016-06-08 20:51:58]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2053483002/1

[commit-bot: I haz the power, 2016-06-08 20:53:08]

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

[commit-bot: I haz the power, 2016-06-08 20:53:13]

Try jobs failed on following builders:
  mac on master.tryserver.client.pdfium (JOB_FAILED,
https://build.chromium.org/p/tryserver.client.pdfium/builders/mac/builds/1014)
  mac_no_v8 on master.tryserver.client.pdfium (JOB_FAILED,
https://build.chromium.org/p/tryserver.client.pdfium/builders/mac_no_v8/build...)
  win on master.tryserver.client.pdfium (JOB_FAILED,
https://build.chromium.org/p/tryserver.client.pdfium/builders/win/builds/1018)

[Tom Sepez, 2016-06-08 21:16:58]

The CQ bit was checked by tsepez@chromium.org

[Tom Sepez, 2016-06-08 21:16:58]

The patchset sent to the CQ was uploaded after l-g-t-m from
dsinclair@chromium.org
Link to the patchset: https://codereview.chromium.org/2053483002/#ps20001
(title: "Fix non-xfa build.")

[commit-bot: I haz the power, 2016-06-08 21:17:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2053483002/20001

[commit-bot: I haz the power, 2016-06-08 21:17:27]

Description was changed from

==========
Remove even more const casting from core.

Make the return types/arguments match reality.
==========

to

==========
Remove even more const casting from core.

Make the return types/arguments match reality.

Committed:
https://pdfium.googlesource.com/pdfium/+/6aac8a822ef227b80173f23ea3169b28a671...
==========

[commit-bot: I haz the power, 2016-06-08 21:17:28]

Committed patchset #2 (id:20001) as
https://pdfium.googlesource.com/pdfium/+/6aac8a822ef227b80173f23ea3169b28a671...