Remove static logging of memory allocations

Remove static logging of memory allocations

We want to move to a world where there's no Isolate::Current but we
always knows which isolate we're in. There's no way we can teach this
info to the C++ allocator.

BUG=none
R=hpayer@chromium.org
LOG=n

Committed: https://crrev.com/6dd52eaf4784b06af060bf054e07968e45937cdf
Cr-Commit-Position: refs/heads/master@{#28414}

[Hannes Payer (out of office), 2015-05-15 07:07:31]

Is nobody using that anymore? If that is the case, LGTM.

[jochen (gone - plz use gerrit), 2015-05-15 07:35:25]

The CQ bit was checked by jochen@chromium.org

[commit-bot: I haz the power, 2015-05-15 07:35:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1128023005/1

[commit-bot: I haz the power, 2015-05-15 07:37:21]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-15 07:37:37]

Patchset 1 (id:??) landed as
https://crrev.com/6dd52eaf4784b06af060bf054e07968e45937cdf
Cr-Commit-Position: refs/heads/master@{#28414}