Retry "Use a WeakCell in the CallIC type vector."

Retry "Use a WeakCell in the CallIC type vector."

The first try failed because I needed to make a better distinction
between clearing ICs according to policy at GC time or unconditional
clearing (say, via %ClearFunctionTypeFeedback).

It was also blocked by an issue in super constructor calls.
This fix (https://codereview.chromium.org/892113002/) needs to land
before checking in this CL.

R=ulan@chromium.org

Committed: https://crrev.com/6fc97a19653e03a891d3cd397069d5a10b9ab325
Cr-Commit-Position: refs/heads/master@{#26420}

[mvstanton, 2015-01-30 11:29:48]

Patchset #2 (id:20001) has been deleted

[mvstanton, 2015-02-02 09:16:50]

Hi Ulan,
Here is another run at the WeakCell work. The "new" work is in the 2nd patchset.

I won't check this in until this CL has landed
(https://codereview.chromium.org/892113002/). The reason is that the change to
use WeakCells for calls exposed a bug where confusion between slots and ic slots
was tolerated.

Thanks again,
--Michael

[ulan, 2015-02-02 09:41:39]

diff between PS2 and PS2 lgtm.

[ulan, 2015-02-02 09:42:05]

On 2015/02/02 09:41:39, ulan wrote:
> diff between PS2 and PS2 lgtm.
diff between PS2 and PS1 lgtm. :)

[mvstanton, 2015-02-04 08:43:35]

The CQ bit was checked by mvstanton@chromium.org

[commit-bot: I haz the power, 2015-02-04 08:44:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/866493003/60001

[mvstanton, 2015-02-04 09:43:41]

The CQ bit was checked by mvstanton@chromium.org

[commit-bot: I haz the power, 2015-02-04 09:44:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/866493003/80001

[commit-bot: I haz the power, 2015-02-04 09:46:16]

Committed patchset #4 (id:80001)

[commit-bot: I haz the power, 2015-02-04 09:46:36]

Patchset 4 (id:??) landed as
https://crrev.com/6fc97a19653e03a891d3cd397069d5a10b9ab325
Cr-Commit-Position: refs/heads/master@{#26420}