Update default WriteFile permissions to 0640

Update default WriteFile permissions to 0640

BUG=362887
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=274593

[aurimas (slooooooooow), 2014-05-16 18:05:27]

Hey Yaron,

PTAL.

Aurimas

[Yaron, 2014-05-19 18:35:58]

this seems reasonable to me based on discussion but ranges wider than just
android. +Brett for further consideration

[aurimas (slooooooooow), 2014-06-03 00:10:13]

On 2014/05/19 18:35:58, Yaron wrote:
> this seems reasonable to me based on discussion but ranges wider than just
> android. +Brett for further consideration

ping?

[brettw, 2014-06-03 17:28:49]

These permissions make intuitive sense to me, 0666 seems like a bad idea.

LGTM

[aurimas (slooooooooow), 2014-06-03 17:29:54]

The CQ bit was checked by aurimas@chromium.org

[commit-bot: I haz the power, 2014-06-03 17:30:45]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/aurimas@chromium.org/290143005/1

[commit-bot: I haz the power, 2014-06-03 19:35:09]

Change committed as 274593

[Lei Zhang, 2014-08-15 19:35:03]

I can't see the bug so I have no idea why this was done, but did you really have
to do this? creat() takes the process's umask into account. So given a system
where the umask is 0027,

creat("perm640", 0640);

and

creat("perm666", 0666);

creates two files both with 0640 as their permissions.