[heap] Fix test-heap/PromotionQueue test.

[heap] Fix test-heap/PromotionQueue test.

BUG=

Committed: https://crrev.com/faa640954ab825fbc4b42869b90857cef22342a0
Cr-Commit-Position: refs/heads/master@{#31085}

[Hannes Payer (out of office), 2015-10-01 15:02:32]

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

[Hannes Payer (out of office), 2015-10-01 15:02:33]

https://codereview.chromium.org/1376143006/diff/1/test/cctest/test-heap.cc
File test/cctest/test-heap.cc (right):

https://codereview.chromium.org/1376143006/diff/1/test/cctest/test-heap.cc#ne...
test/cctest/test-heap.cc:5639: heap->CollectGarbage(NEW_SPACE);
Unfortunately, we cannot assert that.

[ulan, 2015-10-02 15:31:53]

lgtm

[Hannes Payer (out of office), 2015-10-02 15:32:22]

The CQ bit was checked by hpayer@chromium.org

[commit-bot: I haz the power, 2015-10-02 15:32:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1376143006/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1376143006/20001

[commit-bot: I haz the power, 2015-10-02 15:55:13]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-10-02 15:55:24]

Patchset 2 (id:??) landed as
https://crrev.com/faa640954ab825fbc4b42869b90857cef22342a0
Cr-Commit-Position: refs/heads/master@{#31085}