Remove prototype key from the prototype transitions since its also embedded in the target map.

Remove prototype key from the prototype transitions since its also embedded in the target map.

BUG=

Committed: https://crrev.com/a1f7b01ccf9d4771c58d2816e3c649946da14ab0
Cr-Commit-Position: refs/heads/master@{#26662}

[Toon Verwaest, 2015-02-16 12:05:34]

verwaest@chromium.org changed reviewers:
+ hpayer@chromium.org, ishell@chromium.org

[Toon Verwaest, 2015-02-16 12:05:35]

PTAL

[Igor Sheludko, 2015-02-16 12:27:00]

lgtm

[Toon Verwaest, 2015-02-16 12:45:10]

New patchsets have been uploaded after l-g-t-m from ishell@chromium.org

[Toon Verwaest, 2015-02-16 12:46:58]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2015-02-16 12:47:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/932583002/60001

[commit-bot: I haz the power, 2015-02-16 13:09:59]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-02-16 13:10:14]

Patchset 4 (id:??) landed as
https://crrev.com/a1f7b01ccf9d4771c58d2816e3c649946da14ab0
Cr-Commit-Position: refs/heads/master@{#26662}

[Hannes Payer (out of office), 2015-02-16 13:37:20]

lgtm

https://codereview.chromium.org/932583002/diff/60001/src/objects.cc
File src/objects.cc (right):

https://codereview.chromium.org/932583002/diff/60001/src/objects.cc#newcode11837
src/objects.cc:11837: int new_capacity = Min(kMaxCachedPrototypeTransitions,
transitions * 2);
We could have used a constant there for the growing factor.