[bisect] - Bail early when bisecting return codes.

[bisect] - Bail early when bisecting return codes.

BUG=

Committed: https://crrev.com/85eab771dc8fe433f8e3440d6abedfe7ac11f8c1
Cr-Commit-Position: refs/heads/master@{#324091}

[shatch, 2015-04-07 18:35:32]

simonhatch@chromium.org changed reviewers:
+ prasadv@chromium.org

[prasadv, 2015-04-07 18:46:42]

lgtm

[shatch, 2015-04-07 18:47:39]

The CQ bit was checked by simonhatch@chromium.org

[commit-bot: I haz the power, 2015-04-07 18:48:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1069033002/1

[commit-bot: I haz the power, 2015-04-07 19:10:16]

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

[commit-bot: I haz the power, 2015-04-07 19:10:17]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[shatch, 2015-04-07 19:16:02]

The CQ bit was checked by simonhatch@chromium.org

[commit-bot: I haz the power, 2015-04-07 19:16:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1069033002/1

[commit-bot: I haz the power, 2015-04-07 19:27:21]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-07 19:28:44]

Patchset 1 (id:??) landed as
https://crrev.com/85eab771dc8fe433f8e3440d6abedfe7ac11f8c1
Cr-Commit-Position: refs/heads/master@{#324091}