[Autofill] No longer send form name at query time.

[Autofill] No longer send form name at query time.

Added as part of a recent CL, the form name is not required for the improvements to the Autofill server that are upcoming.

BUG=484229
TEST=FormStructure*,AutofillServer*

Committed: https://crrev.com/cc762f484dbbddf43b3cc6c6aa25b1e4233579ae
Cr-Commit-Position: refs/heads/master@{#329211}

[Mathieu, 2015-05-11 14:49:23]

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

[Mathieu, 2015-05-11 14:49:49]

Hi, 

Have a look, I'm reverting part of my last change as it may not be needed for
now.

[Evan Stade, 2015-05-11 17:52:41]

The CQ bit was checked by estade@chromium.org

[Evan Stade, 2015-05-11 17:52:41]

lgtm

[commit-bot: I haz the power, 2015-05-11 18:00:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1138033002/1

[commit-bot: I haz the power, 2015-05-11 18:52:38]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-11 18:53:26]

Patchset 1 (id:??) landed as
https://crrev.com/cc762f484dbbddf43b3cc6c6aa25b1e4233579ae
Cr-Commit-Position: refs/heads/master@{#329211}