Minor cleanup in BookmarkBarView

Minor cleanup in BookmarkBarView

Nukes LayoutItems and folds into Layout as that is the only place
calling into it. Removes early out if parent() is NULL in Layout. No
point in doing that.

BUG=416641
TEST=none
R=msw@chromium.org

Committed: https://crrev.com/7ec19e142e70a0085514b972cd9c4d9ce4460c16
Cr-Commit-Position: refs/heads/master@{#299920}

[sky, 2014-10-15 16:10:41]

https://codereview.chromium.org/656033007/diff/1/chrome/browser/ui/views/book...
File chrome/browser/ui/views/bookmarks/bookmark_bar_view.cc (right):

https://codereview.chromium.org/656033007/diff/1/chrome/browser/ui/views/book...
chrome/browser/ui/views/bookmarks/bookmark_bar_view.cc:786: int x = kLeftMargin;
The only difference from old is removing the if (!parent()) return; the rest is
a straight move.

[msw, 2014-10-15 17:54:32]

lgtm

[sky, 2014-10-15 17:59:41]

The CQ bit was checked by sky@chromium.org

[commit-bot: I haz the power, 2014-10-15 18:00:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/656033007/1

[commit-bot: I haz the power, 2014-10-15 19:05:08]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-10-15 19:05:09]

Try jobs failed on following builders:
  linux_chromium_chromeos_rel_swarming on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  linux_chromium_rel_swarming on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[sky, 2014-10-16 17:00:26]

I had to update test code as it was working around the old behavior of requiring
a parent. It was minor, so I'm going to try and land again.

[sky, 2014-10-16 17:00:30]

The CQ bit was checked by sky@chromium.org

[commit-bot: I haz the power, 2014-10-16 17:02:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/656033007/20001

[commit-bot: I haz the power, 2014-10-16 17:51:09]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2014-10-16 17:51:48]

Patchset 2 (id:??) landed as
https://crrev.com/7ec19e142e70a0085514b972cd9c4d9ce4460c16
Cr-Commit-Position: refs/heads/master@{#299920}