Don't roundtrip to JS to update the length. This is 1) faster (although we don't care) and 2) avoid…

Don't roundtrip to JS to update the length. This is 1) faster (although we don't care) and 2) avoids stackchecks that otherwise make the .Assert fail on stack overflow.

BUG=chromium:502147
LOG=n

Committed: https://crrev.com/554bc07d9627161cd9d65fccb9ec76f37eac72bc
Cr-Commit-Position: refs/heads/master@{#29142}

[Toon Verwaest, 2015-06-19 09:05:52]

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

[Toon Verwaest, 2015-06-19 09:05:53]

ptal

[Igor Sheludko, 2015-06-19 09:18:10]

lgtm

[Toon Verwaest, 2015-06-19 09:24:01]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2015-06-19 09:24:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1189423002/1

[commit-bot: I haz the power, 2015-06-19 10:41:58]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-19 10:42:12]

Patchset 1 (id:??) landed as
https://crrev.com/554bc07d9627161cd9d65fccb9ec76f37eac72bc
Cr-Commit-Position: refs/heads/master@{#29142}