Partially revert https://crrev.com/7e53749df0a10f475404e86ef0ca8df02bb79e7a

Partially revert https://crrev.com/7e53749df0a10f475404e86ef0ca8df02bb79e7a

This fixes memory regression caused by not reducing new-space size.

BUG=chromium:517468
LOG=NO

Committed: https://crrev.com/e296644f953f5af906483abaa0965818c5369dd9
Cr-Commit-Position: refs/heads/master@{#30049}

[ulan, 2015-08-06 14:00:48]

ulan@chromium.org changed reviewers:
+ hpayer@chromium.org

[ulan, 2015-08-06 14:00:49]

PTAL

[Hannes Payer (out of office), 2015-08-06 14:38:45]

On 2015/08/06 14:00:49, ulan wrote:
> PTAL
Lgtm

[ulan, 2015-08-06 15:36:26]

The CQ bit was checked by ulan@chromium.org

[commit-bot: I haz the power, 2015-08-06 15:36:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1273083002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1273083002/20001

[commit-bot: I haz the power, 2015-08-06 16:05:19]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-08-06 16:05:34]

Patchset 2 (id:??) landed as
https://crrev.com/e296644f953f5af906483abaa0965818c5369dd9
Cr-Commit-Position: refs/heads/master@{#30049}