M55: Strengthen bounds check in CWeightTable::Calc * part II

M55: Strengthen bounds check in CWeightTable::Calc * part II

This CL implemented a better version of CWeightTable::GetPixelWeightSize(), which will calculate the size of array PixelWeight.m_Weights correctly to prevent potential heap buffer overflow conditions.

BUG=chromium:654183
TBR=tsepez@chromium.org

Review-Url: https://codereview.chromium.org/2404453003
(cherry picked from commit 05923132ae08d45fbe957219775a48c55ee57aef)

Committed: https://pdfium.googlesource.com/pdfium/+/ed6485f1aa4ce9de8b5cab86cc844df4f4bd0b52

[Lei Zhang, 2016-10-24 20:38:50]

Description was changed from

==========
M55: Strengthen bounds check in CWeightTable::Calc * part II

This CL implemented a better version of CWeightTable::GetPixelWeightSize(),
which will calculate the size of array PixelWeight.m_Weights correctly to
prevent potential heap buffer overflow conditions.

BUG=chromium:654183

Review-Url: https://codereview.chromium.org/2404453003
(cherry picked from commit 05923132ae08d45fbe957219775a48c55ee57aef)
==========

to

==========
M55: Strengthen bounds check in CWeightTable::Calc * part II

This CL implemented a better version of CWeightTable::GetPixelWeightSize(),
which will calculate the size of array PixelWeight.m_Weights correctly to
prevent potential heap buffer overflow conditions.

BUG=chromium:654183
TBR=tsepez@chromium.org

Review-Url: https://codereview.chromium.org/2404453003
(cherry picked from commit 05923132ae08d45fbe957219775a48c55ee57aef)
==========

[Lei Zhang, 2016-10-24 20:38:50]

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

[Lei Zhang, 2016-10-24 20:39:08]

Description was changed from

==========
M55: Strengthen bounds check in CWeightTable::Calc * part II

This CL implemented a better version of CWeightTable::GetPixelWeightSize(),
which will calculate the size of array PixelWeight.m_Weights correctly to
prevent potential heap buffer overflow conditions.

BUG=chromium:654183
TBR=tsepez@chromium.org

Review-Url: https://codereview.chromium.org/2404453003
(cherry picked from commit 05923132ae08d45fbe957219775a48c55ee57aef)
==========

to

==========
M55: Strengthen bounds check in CWeightTable::Calc * part II

This CL implemented a better version of CWeightTable::GetPixelWeightSize(),
which will calculate the size of array PixelWeight.m_Weights correctly to
prevent potential heap buffer overflow conditions.

BUG=chromium:654183
TBR=tsepez@chromium.org

Review-Url: https://codereview.chromium.org/2404453003
(cherry picked from commit 05923132ae08d45fbe957219775a48c55ee57aef)

Committed:
https://pdfium.googlesource.com/pdfium/+/ed6485f1aa4ce9de8b5cab86cc844df4f4bd...
==========

[Lei Zhang, 2016-10-24 20:39:09]

Committed patchset #1 (id:1) manually as
ed6485f1aa4ce9de8b5cab86cc844df4f4bd0b52 (presubmit successful).