Fix unix file permissions in resource zips and jar files

Fix unix file permissions in resource zips and jar files

https://codereview.chromium.org/1319623002 changed how zip files are
created in the python helper and (accidentally?) made it set 000 unix file
permissions for the archived files. Make it 644 so the zip files are not
suprising to work with on Linux if anyone needs to look at them manually.

BUG=523420
R=dpranke@chromium.org, agrieve@chromium.org,

Committed: https://crrev.com/7f176175ed3c9aa94a796676ce68ed3628e5515b
Cr-Commit-Position: refs/heads/master@{#351843}

[tsniatowski, 2015-10-01 13:16:37]

tsniatowski@opera.com changed reviewers:
+ agrieve@chromium.org

[agrieve, 2015-10-01 15:08:18]

On 2015/10/01 13:17:11, tsniatowski wrote:

lgtm

[tsniatowski, 2015-10-01 16:19:27]

The CQ bit was checked by tsniatowski@opera.com

[commit-bot: I haz the power, 2015-10-01 16:32:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1384513002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1384513002/1

[commit-bot: I haz the power, 2015-10-01 18:11:37]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-01 18:12:32]

Patchset 1 (id:??) landed as
https://crrev.com/7f176175ed3c9aa94a796676ce68ed3628e5515b
Cr-Commit-Position: refs/heads/master@{#351843}

[Dirk Pranke, 2015-10-01 18:52:08]

lgtm