Revert 158451 - Always use objdump to determine arch of nexe

Revert 158451 - Always use objdump to determine arch of nexe

This broke chromeos builds and I'm not currently setup
to build and test chromeos so revert for now.

BUG=
TBR=binji


Review URL: https://chromiumcodereview.appspot.com/10916343

TBR=sbc@chromium.org

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=158618

[commit-bot: I haz the power, 2012-09-25 01:50:50]

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 or
a lowly provisional 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.

[Sam Clegg, 2012-09-25 16:13:59]

Can one of you guys LG this revert for me?

The build is still broken :(

[bshe, 2012-09-25 16:14:44]

On 2012/09/25 01:50:50, I haz the power (commit-bot) wrote:
> 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 or
> a lowly provisional 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.

lgtm

[davidjames, 2012-09-25 16:14:53]

lgtm

[commit-bot: I haz the power, 2012-09-25 16:15:01]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/sbc@chromium.org/10979011/1

[commit-bot: I haz the power, 2012-09-25 18:29:46]

Change committed as 158618