Re-land "Make CPDF_IndirectObjectHolder use unique_ptr to objects""

Re-land "Make CPDF_IndirectObjectHolder use unique_ptr to objects""

This reverts commit 81e1e3fd2d33478733e47bd007b76fac1a663e74.

Committed: https://pdfium.googlesource.com/pdfium/+/5b7c9bbf6c26ca272706814ad3598894ce5e4e3b

[Tom Sepez, 2016-09-20 18:30:46]

The CQ bit was checked by tsepez@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-20 18:30:51]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Tom Sepez, 2016-09-20 18:31:44]

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

[Tom Sepez, 2016-09-20 18:31:45]

Dan, quick check before re-landing.

[dsinclair, 2016-09-20 18:34:01]

lgtm

[commit-bot: I haz the power, 2016-09-20 18:45:17]

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

[commit-bot: I haz the power, 2016-09-20 18:45:18]

Dry run: This issue passed the CQ dry run.

[Tom Sepez, 2016-09-20 19:02:07]

The CQ bit was checked by tsepez@chromium.org

[commit-bot: I haz the power, 2016-09-20 19:02:17]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-20 19:02:34]

Description was changed from

==========
Re-land "Make CPDF_IndirectObjectHolder use unique_ptr to objects""

This reverts commit 81e1e3fd2d33478733e47bd007b76fac1a663e74.
==========

to

==========
Re-land "Make CPDF_IndirectObjectHolder use unique_ptr to objects""

This reverts commit 81e1e3fd2d33478733e47bd007b76fac1a663e74.

Committed:
https://pdfium.googlesource.com/pdfium/+/5b7c9bbf6c26ca272706814ad3598894ce5e...
==========

[commit-bot: I haz the power, 2016-09-20 19:02:35]

Committed patchset #1 (id:1) as
https://pdfium.googlesource.com/pdfium/+/5b7c9bbf6c26ca272706814ad3598894ce5e...