Revert "This patch implements optimized objectInfo structure which manages the set of observers ass…

Revert "This patch implements optimized objectInfo structure which manages the set of observers associated with an object and the changeRecord types which they accept."

This reverts r16343 due to mjsunit object-observe failures on several bots:
  - V8 Linux nosse2
  - V8 GC stress 2

TBR=rossberg

Committed: https://code.google.com/p/v8/source/detail?r=16344

[adamk, 2013-08-26 22:45:16]

Committed patchset #2 manually as r16344.

[adamk, 2013-08-26 22:48:17]

On 2013/08/26 22:45:16, adamk wrote:
> Committed patchset #2 manually as r16344.

Any hints on how to reproduce this build ("nosse") locally would be helpful.

[adamk, 2013-08-26 23:11:33]

Tried runnings tests with

"--extra-flags --noenable-sse2"

which is what the bot seems to do, but the test still passes for me.

[rossberg, 2013-08-27 09:33:24]

On 2013/08/26 23:11:33, adamk - vacation until sept 3 wrote:
> Tried runnings tests with
> 
> "--extra-flags --noenable-sse2"
> 
> which is what the bot seems to do, but the test still passes for me.

Running this in the V8 dir seems to reproduce it (thanks to Michael):

./tools/run-tests.py --arch=ia32 --mode=release --extra-flags="--noenable-sse2"
mjsunit/harmony/object-observe

However, it is flaky. You probably have to run it a few times before the failure
occurs.

Unfortunately, I have no idea off-hand concerning the cause.