Scale old generation growing strategy based on allocation rate.

Scale old generation growing strategy based on allocation rate.

Before we used to scale the growing factor based on freed global handles (which may have caused jank when many global handles got freed on site navigation).

BUG=

Committed: https://crrev.com/d8a82ed74c56189516ce7c9495489160825c180b
Cr-Commit-Position: refs/heads/master@{#28652}

[Hannes Payer (out of office), 2015-05-27 09:15:10]

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

[ulan, 2015-05-27 11:31:20]

lgtm

[Hannes Payer (out of office), 2015-05-27 12:43:19]

The CQ bit was checked by hpayer@chromium.org

[commit-bot: I haz the power, 2015-05-27 12:43:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1158433003/60001

[commit-bot: I haz the power, 2015-05-27 13:09:19]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-05-27 13:09:28]

Patchset 4 (id:??) landed as
https://crrev.com/d8a82ed74c56189516ce7c9495489160825c180b
Cr-Commit-Position: refs/heads/master@{#28652}