[Autofill] Send the form name in Autofill uploads where metadata is collected.

[Autofill] Send the form name in Autofill uploads where metadata is collected.

Controlled by the AutofillFieldMetadata trial, we send the form name as described in the bug.

BUG=548366
Committed: https://crrev.com/6df39ba725668c2883322823734638248ab4257f
Cr-Commit-Position: refs/heads/master@{#357046}

[Mathieu, 2015-10-29 12:05:55]

mathp@chromium.org changed reviewers:
+ estade@chromium.org

[Mathieu, 2015-10-29 12:05:56]

Hi, please have a look!

[Evan Stade, 2015-10-30 00:12:56]

lgtm

[Mathieu, 2015-10-30 04:33:04]

The CQ bit was checked by mathp@chromium.org

[commit-bot: I haz the power, 2015-10-30 04:33:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1422853003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1422853003/1

[commit-bot: I haz the power, 2015-10-30 04:37:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-30 04:38:26]

Patchset 1 (id:??) landed as
https://crrev.com/6df39ba725668c2883322823734638248ab4257f
Cr-Commit-Position: refs/heads/master@{#357046}