[Icons NTP] Make Fast Local NTP render largeIconUrl instead of thumbnail, if available.

[Icons NTP] Make Fast Local NTP render largeIconUrl instead of thumbnail, if available.

This is the fast local NTP counterpart to https://crrev.com/1013173003.

BUG=467712
Committed: https://crrev.com/b76334fe1d7db68c5eae1012008f031560295ca2
Cr-Commit-Position: refs/heads/master@{#321861}

[huangs, 2015-03-23 18:47:58]

huangs@chromium.org changed reviewers:
+ fserb@chromium.org, mathp@chromium.org

[huangs, 2015-03-23 18:47:59]

PTAL.

[Mathieu, 2015-03-23 18:50:39]

lgtm

[huangs, 2015-03-23 21:36:18]

The CQ bit was checked by huangs@chromium.org

[huangs, 2015-03-23 21:36:18]

The patchset sent to the CQ was uploaded after l-g-t-m from mathp@chromium.org
Link to the patchset: https://codereview.chromium.org/1029583003/#ps40001
(title: "A bit of renaming to reduce ambiguity.")

[commit-bot: I haz the power, 2015-03-23 21:36:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1029583003/40001

[commit-bot: I haz the power, 2015-03-23 21:41:42]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-03-23 21:42:55]

Patchset 3 (id:??) landed as
https://crrev.com/b76334fe1d7db68c5eae1012008f031560295ca2
Cr-Commit-Position: refs/heads/master@{#321861}