PPC: Fix 'PPC: Serializer: serialize internal references via object visitor.'

PPC: Fix 'PPC: Serializer: serialize internal references via object visitor.'

Port 56d2ee0310972119ec47810ee03a4f7077f7117e

Original commit message:

R=mbrandy@us.ibm.com

BUG=

Committed: https://crrev.com/052020e514bb56aa2c5f8ff116d47a5a1f4e447a
Cr-Commit-Position: refs/heads/master@{#27428}

[michael_dawson, 2015-03-24 13:48:25]

next ppc port

[MTBrandyberry, 2015-03-24 13:53:54]

On 2015/03/24 13:48:25, michael_dawson wrote:
> next ppc port

lgtm

[michael_dawson, 2015-03-24 13:57:42]

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

[commit-bot: I haz the power, 2015-03-24 13:57:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1036453002/1

[commit-bot: I haz the power, 2015-03-24 13:57:53]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-03-24 13:57:54]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[Sven Panne, 2015-03-24 14:00:26]

svenpanne@chromium.org changed reviewers:
+ machenbach@chromium.org, svenpanne@chromium.org

[Sven Panne, 2015-03-24 14:00:27]

Hmmm, something is not working yet. Michael?

[Michael Achenbach, 2015-03-24 22:17:41]

The CQ bit was checked by machenbach@chromium.org

[commit-bot: I haz the power, 2015-03-24 22:17:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1036453002/1

[Michael Achenbach, 2015-03-24 22:20:57]

I hit the CQ once more. Now it seems to work. Maybe that committer change wasn't
fetch on the cq side at the time of the first commit attempt. Please ping me if
it still doesn't work.

[commit-bot: I haz the power, 2015-03-25 06:40:08]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-25 06:40:16]

Patchset 1 (id:??) landed as
https://crrev.com/052020e514bb56aa2c5f8ff116d47a5a1f4e447a
Cr-Commit-Position: refs/heads/master@{#27428}