Revert of Remove some dead PDF code.

Revert of Remove some dead PDF code. (patchset #3 id:40001 of https://codereview.chromium.org/1552833003/ )

Reason for revert:
Causes a crash.

BUG=574440
Original issue's description:
> Remove some dead PDF code.
>
> Committed: https://crrev.com/e2cb8a125d8079f85c16290ee761460cf54b9ec4
> Cr-Commit-Position: refs/heads/master@{#367398}

TBR=raymes@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/a9650644c1ea100dbde61b9c5f2fad57a82733cf
Cr-Commit-Position: refs/heads/master@{#367570}

[Lei Zhang, 2016-01-05 17:55:26]

Created Revert of Remove some dead PDF code.

[commit-bot: I haz the power, 2016-01-05 17:56:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1557423002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1557423002/1

[commit-bot: I haz the power, 2016-01-05 17:58:35]

Description was changed from

==========
Revert of Remove some dead PDF code. (patchset #3 id:40001 of
https://codereview.chromium.org/1552833003/ )

Reason for revert:
Causes a crash.

BUG=574440

Original issue's description:
> Remove some dead PDF code.
> 
> Committed: https://crrev.com/e2cb8a125d8079f85c16290ee761460cf54b9ec4
> Cr-Commit-Position: refs/heads/master@{#367398}

TBR=raymes@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

to

==========
Revert of Remove some dead PDF code. (patchset #3 id:40001 of
https://codereview.chromium.org/1552833003/ )

Reason for revert:
Causes a crash.

BUG=574440

Original issue's description:
> Remove some dead PDF code.
> 
> Committed: https://crrev.com/e2cb8a125d8079f85c16290ee761460cf54b9ec4
> Cr-Commit-Position: refs/heads/master@{#367398}

TBR=raymes@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

[commit-bot: I haz the power, 2016-01-05 17:58:36]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-05 17:59:42]

Description was changed from

==========
Revert of Remove some dead PDF code. (patchset #3 id:40001 of
https://codereview.chromium.org/1552833003/ )

Reason for revert:
Causes a crash.

BUG=574440

Original issue's description:
> Remove some dead PDF code.
> 
> Committed: https://crrev.com/e2cb8a125d8079f85c16290ee761460cf54b9ec4
> Cr-Commit-Position: refs/heads/master@{#367398}

TBR=raymes@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

to

==========
Revert of Remove some dead PDF code. (patchset #3 id:40001 of
https://codereview.chromium.org/1552833003/ )

Reason for revert:
Causes a crash.

BUG=574440

Original issue's description:
> Remove some dead PDF code.
>
> Committed: https://crrev.com/e2cb8a125d8079f85c16290ee761460cf54b9ec4
> Cr-Commit-Position: refs/heads/master@{#367398}

TBR=raymes@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/a9650644c1ea100dbde61b9c5f2fad57a82733cf
Cr-Commit-Position: refs/heads/master@{#367570}
==========

[commit-bot: I haz the power, 2016-01-05 17:59:43]

Patchset 1 (id:??) landed as
https://crrev.com/a9650644c1ea100dbde61b9c5f2fad57a82733cf
Cr-Commit-Position: refs/heads/master@{#367570}