Valgrind: Suppress several layout test errors.

Valgrind: Suppress several layout test errors.

BUG=385381, 385386, 385396
NOTRY=true
TBR=timurrrr@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=277599

[Lei Zhang, 2014-06-17 00:45:02]

TBR

[Lei Zhang, 2014-06-17 00:45:05]

The CQ bit was checked by thestig@chromium.org

[commit-bot: I haz the power, 2014-06-17 00:48:00]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/thestig@chromium.org/339693003/1

[commit-bot: I haz the power, 2014-06-17 00:50:27]

Change committed as 277599

[Yoav Weiss, 2014-06-17 08:36:29]

On 2014/06/17 00:50:27, I haz the power (commit-bot) wrote:
> Change committed as 277599

Do we know what changed that suddenly triggered all these errors? (the buggy
code, at least in some of the cases, have been there for a few years).

[Lei Zhang, 2014-06-17 18:23:41]

On 2014/06/17 08:36:29, Yoav Weiss wrote:
> On 2014/06/17 00:50:27, I haz the power (commit-bot) wrote:
> > Change committed as 277599
> 
> Do we know what changed that suddenly triggered all these errors? (the buggy
> code, at least in some of the cases, have been there for a few years).

Maybe new tests get added that exercised this code path? The Valgrind layout
test bot only runs a chunk of layout tests at a time, so it takes some time to
cycle through all the tests. Maybe the memory sheriffs missed these errors
previously?

[Timur Iskhodzhanov, 2014-07-07 12:24:53]

Suppressions LGTM
but please don't leave crbugs without owners as they slip through the cracks.