Add dependency on gfx_vector_icons to autofill_core_browser

Add dependency on gfx_vector_icons to autofill_core_browser

autofill_cc_infobar_delegate.cc which is built as part of
autofill_core_browser uses generated vector_icons.h, there
should be an explicit dependency otherwise builds succeed
randomly.

BUG=

Committed: https://crrev.com/f94776e2fcf18c26af89dd4870f7114c8e87538d
Cr-Commit-Position: refs/heads/master@{#353305}

[mpawlowski, 2015-10-09 13:10:18]

mpawlowski@opera.com changed reviewers:
+ estade@chromium.org, isherman@chromium.org

[Evan Stade, 2015-10-09 15:19:52]

lgtm

thanks

[Evan Stade, 2015-10-09 15:19:55]

The CQ bit was checked by estade@chromium.org

[commit-bot: I haz the power, 2015-10-09 15:21:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1394603003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1394603003/1

[commit-bot: I haz the power, 2015-10-09 16:26:09]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-09 16:27:08]

Patchset 1 (id:??) landed as
https://crrev.com/f94776e2fcf18c26af89dd4870f7114c8e87538d
Cr-Commit-Position: refs/heads/master@{#353305}