[AiS] Extract Answers, store on AutocompleteMatch.

[AiS] Extract Answers, store on AutocompleteMatch.

This extracts Answers from the results JSON, if they exist, and make
sure they're available on AutocompleteMatch objects.

BUG=370192
R=pkasting@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=270906

[Peter Kasting, 2014-05-15 22:15:02]

LGTM

[groby-ooo-7-16, 2014-05-15 22:36:22]

The CQ bit was checked by groby@chromium.org

[commit-bot: I haz the power, 2014-05-15 22:37:04]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/groby@chromium.org/285343004/1

[commit-bot: I haz the power, 2014-05-16 00:40:03]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  android_dbg on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg/builds/18...)
  linux_chromium_chromeos_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_chrome...)
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)

[commit-bot: I haz the power, 2014-05-16 01:03:13]

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

[commit-bot: I haz the power, 2014-05-16 01:03:14]

Try jobs failed on following builders:
  linux_chromium_chromeos_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_chrome...)

[groby-ooo-7-16, 2014-05-16 01:09:41]

The CQ bit was checked by groby@chromium.org

[commit-bot: I haz the power, 2014-05-16 01:09:51]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/groby@chromium.org/285343004/1

[commit-bot: I haz the power, 2014-05-16 02:50:11]

Change committed as 270906