X87: Correctify instanceof and make it optimizable.

X87: Correctify instanceof and make it optimizable.

port 5d875a57fa2e65c1a4a6b50aeb23c38299c3cfbc (r30342).

original commit message:

    The previous hack with HInstanceOfKnownGlobal was not only slower,
    but also very brittle and required a lot of weird hacks to support it. And
    what's even more important it wasn't even correct (because a map check
    on the lhs is never enough for instanceof).

    The new implementation provides a sane runtime implementation
    for InstanceOf plus a fast case in the InstanceOfStub, combined with
    a proper specialization in the case of a known global in CrankShaft,
    which does only the prototype chain walk (coupled with a code
    dependency on the known global).

    As a drive-by-fix: Also fix the incorrect Object.prototype.isPrototypeOf
    implementation.

R=weiliang.lin@intel.com
BUG=

Committed: https://crrev.com/3aeed04dc265ce3a5f0d244a6cf3e1fca670b0e0
Cr-Commit-Position: refs/heads/master@{#30376}

[chunyang.dai, 2015-08-26 05:50:29]

PTAL.

[Weiliang, 2015-08-26 09:32:44]

The CQ bit was checked by weiliang.lin@intel.com

[Weiliang, 2015-08-26 09:32:44]

lgtm

[commit-bot: I haz the power, 2015-08-26 09:32:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1318663003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1318663003/1

[commit-bot: I haz the power, 2015-08-26 09:56:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-26 09:57:01]

Patchset 1 (id:??) landed as
https://crrev.com/3aeed04dc265ce3a5f0d244a6cf3e1fca670b0e0
Cr-Commit-Position: refs/heads/master@{#30376}