Support ES6 weak collections in heap profiler

Support ES6 weak collections in heap profiler

BUG=chromium:376196
LOG=Y
R=alph@chromium.org, yangguo@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=21460

[alph, 2014-05-22 15:41:40]

other than that lgtm

https://codereview.chromium.org/294163005/diff/1/test/cctest/test-heap-profil...
File test/cctest/test-heap-profiler.cc (right):

https://codereview.chromium.org/294163005/diff/1/test/cctest/test-heap-profil...
test/cctest/test-heap-profiler.cc:531: if (prop->GetType() !=
v8::HeapGraphEdge::kElement) continue;
kWeak
Also check that you've found exactly one.

https://codereview.chromium.org/294163005/diff/1/test/cctest/test-heap-profil...
test/cctest/test-heap-profiler.cc:548: if (prop->GetType() !=
v8::HeapGraphEdge::kElement) continue;
Ditto

[yurys, 2014-05-22 15:47:33]

https://codereview.chromium.org/294163005/diff/1/test/cctest/test-heap-profil...
File test/cctest/test-heap-profiler.cc (right):

https://codereview.chromium.org/294163005/diff/1/test/cctest/test-heap-profil...
test/cctest/test-heap-profiler.cc:531: if (prop->GetType() !=
v8::HeapGraphEdge::kElement) continue;
On 2014/05/22 15:41:40, alph wrote:
> kWeak
> Also check that you've found exactly one.

Done.

https://codereview.chromium.org/294163005/diff/1/test/cctest/test-heap-profil...
test/cctest/test-heap-profiler.cc:548: if (prop->GetType() !=
v8::HeapGraphEdge::kElement) continue;
On 2014/05/22 15:41:40, alph wrote:
> Ditto

Done.

[yurys, 2014-05-23 06:16:22]

Yang, please do OWNERS review

[Yang, 2014-05-23 09:52:54]

On 2014/05/23 06:16:22, yurys wrote:
> Yang, please do OWNERS review

lgtm.

[yurys, 2014-05-23 11:05:31]

Committed patchset #3 manually as r21460 (presubmit successful).