PPC: Correctly annotate eval origin.

PPC: Correctly annotate eval origin.

Port 89d7bfda0d3d3ed48a174a2851cfe5da0b31f056

Original commit message:
        There were a couple of issues with it:
        - interpreter is not supported
        - the source position was just accidentally correct for full-codegen
        - the eval origin could have been cached

        Also fixes a few other places to use AbstractCode.

R=yangguo@chromium.org, joransiu@ca.ibm.com, mbrandy@us.ibm.com, michael_dawson@ca.ibm.com, jyan@ca.ibm.com
BUG=

Committed: https://crrev.com/306add32e5c321145002015c1bf830f511d13534
Cr-Commit-Position: refs/heads/master@{#35587}

[JaideepBajwa, 2016-04-18 14:49:15]

PTAL

[MTBrandyberry, 2016-04-18 15:06:08]

lgtm

[JaideepBajwa, 2016-04-18 15:07:01]

The CQ bit was checked by bjaideep@ca.ibm.com

[commit-bot: I haz the power, 2016-04-18 15:07:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1899763002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1899763002/20001

[commit-bot: I haz the power, 2016-04-18 15:24:47]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-04-18 15:25:12]

Description was changed from

==========
PPC: Correctly annotate eval origin.

Port 89d7bfda0d3d3ed48a174a2851cfe5da0b31f056

Original commit message:
        There were a couple of issues with it:
        - interpreter is not supported
        - the source position was just accidentally correct for full-codegen
        - the eval origin could have been cached

        Also fixes a few other places to use AbstractCode.

R=yangguo@chromium.org, joransiu@ca.ibm.com, mbrandy@us.ibm.com,
michael_dawson@ca.ibm.com, jyan@ca.ibm.com
BUG=
==========

to

==========
PPC: Correctly annotate eval origin.

Port 89d7bfda0d3d3ed48a174a2851cfe5da0b31f056

Original commit message:
        There were a couple of issues with it:
        - interpreter is not supported
        - the source position was just accidentally correct for full-codegen
        - the eval origin could have been cached

        Also fixes a few other places to use AbstractCode.

R=yangguo@chromium.org, joransiu@ca.ibm.com, mbrandy@us.ibm.com,
michael_dawson@ca.ibm.com, jyan@ca.ibm.com
BUG=

Committed: https://crrev.com/306add32e5c321145002015c1bf830f511d13534
Cr-Commit-Position: refs/heads/master@{#35587}
==========

[commit-bot: I haz the power, 2016-04-18 15:25:13]

Patchset 2 (id:??) landed as
https://crrev.com/306add32e5c321145002015c1bf830f511d13534
Cr-Commit-Position: refs/heads/master@{#35587}