[AiS] Fix assignment and copy ctor.

[AiS] Fix assignment and copy ctor.

These were missing from http://crrev.com/285343004, which added  two
new fields to AutocompleteMatch.

BUG=370192
R=pkasting@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=271248

[Peter Kasting, 2014-05-17 00:16:24]

Blargh LGTM

[groby-ooo-7-16, 2014-05-17 00:46:37]

If you think these small changes are mostly annoying, happy to just TBR :)

[groby-ooo-7-16, 2014-05-17 00:46:39]

The CQ bit was checked by groby@chromium.org

[Peter Kasting, 2014-05-17 00:47:52]

On 2014/05/17 00:46:37, groby wrote:
> If you think these small changes are mostly annoying, happy to just TBR :)

TBR would be fine -- but I was actually blarghing at having not caught this
before, and in general how even before I felt like "ugh, more things added to
AutocompleteMatch" and yet failed to moan about it, and this was making me want
to moan even more.

Blargh!

[commit-bot: I haz the power, 2014-05-17 00:48:36]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/groby@chromium.org/290693004/1

[commit-bot: I haz the power, 2014-05-17 17:41:33]

Change committed as 271248