PDF: Fix a crash from r372196 with the print preview PDFEngine client.

PDF: Fix a crash from r372196 with the print preview PDFEngine client.

TEST=Print preview does not crash
BUG=582345
Committed: https://crrev.com/644f4d8731599a7137de1230acc454cd813dd3ba
Cr-Commit-Position: refs/heads/master@{#372360}

[Lei Zhang, 2016-01-29 03:25:01]

Patchset #1 (id:1) has been deleted

[Lei Zhang, 2016-01-29 03:25:54]

thestig@chromium.org changed reviewers:
+ raymes@chromium.org

[Lei Zhang, 2016-01-29 03:25:54]

When I synced my Chromium build and tried to print preview, the PDF plugin in
the print preview window crashed.

[Lei Zhang, 2016-01-29 08:23:17]

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

[Lei Zhang, 2016-01-29 09:36:39]

Description was changed from

==========
PDF: Fix a crash from r372196 with the print preview PDFEngine client.

TEST=Print preview does not crash
==========

to

==========
PDF: Fix a crash from r372196 with the print preview PDFEngine client.

TEST=Print preview does not crash
BUG=582345
==========

[Tom Sepez, 2016-01-29 16:48:12]

The CQ bit was checked by tsepez@chromium.org

[Tom Sepez, 2016-01-29 16:48:12]

lgtm

[commit-bot: I haz the power, 2016-01-29 16:48:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1645073004/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1645073004/20001

[commit-bot: I haz the power, 2016-01-29 16:53:58]

Description was changed from

==========
PDF: Fix a crash from r372196 with the print preview PDFEngine client.

TEST=Print preview does not crash
BUG=582345
==========

to

==========
PDF: Fix a crash from r372196 with the print preview PDFEngine client.

TEST=Print preview does not crash
BUG=582345
==========

[commit-bot: I haz the power, 2016-01-29 16:53:58]

Committed patchset #1 (id:20001)

[commit-bot: I haz the power, 2016-01-29 16:55:06]

Description was changed from

==========
PDF: Fix a crash from r372196 with the print preview PDFEngine client.

TEST=Print preview does not crash
BUG=582345
==========

to

==========
PDF: Fix a crash from r372196 with the print preview PDFEngine client.

TEST=Print preview does not crash
BUG=582345

Committed: https://crrev.com/644f4d8731599a7137de1230acc454cd813dd3ba
Cr-Commit-Position: refs/heads/master@{#372360}
==========

[commit-bot: I haz the power, 2016-01-29 16:55:07]

Patchset 1 (id:??) landed as
https://crrev.com/644f4d8731599a7137de1230acc454cd813dd3ba
Cr-Commit-Position: refs/heads/master@{#372360}