Validate page index in PDFiumEngine::ScrollToPage().

Validate page index in PDFiumEngine::ScrollToPage().

BUG=655991
Committed: https://crrev.com/b83a3aed0a28d2f33d8bf54504f4a5a250e96d25
Cr-Commit-Position: refs/heads/master@{#425507}

[Lei Zhang, 2016-10-14 22:18:45]

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

[commit-bot: I haz the power, 2016-10-14 22:18:59]

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

[Lei Zhang, 2016-10-14 22:20:27]

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

[commit-bot: I haz the power, 2016-10-14 22:59:56]

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

[commit-bot: I haz the power, 2016-10-14 22:59:57]

Dry run: This issue passed the CQ dry run.

[Tom Sepez, 2016-10-14 23:12:23]

lgtm

[Lei Zhang, 2016-10-14 23:16:01]

The CQ bit was checked by thestig@chromium.org

[commit-bot: I haz the power, 2016-10-14 23:16:20]

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, 2016-10-14 23:22:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-14 23:25:03]

Description was changed from

==========
Validate page index in PDFiumEngine::ScrollToPage().

BUG=655991
==========

to

==========
Validate page index in PDFiumEngine::ScrollToPage().

BUG=655991

Committed: https://crrev.com/b83a3aed0a28d2f33d8bf54504f4a5a250e96d25
Cr-Commit-Position: refs/heads/master@{#425507}
==========

[commit-bot: I haz the power, 2016-10-14 23:25:03]

Patchset 1 (id:??) landed as
https://crrev.com/b83a3aed0a28d2f33d8bf54504f4a5a250e96d25
Cr-Commit-Position: refs/heads/master@{#425507}