Update BrowserView::ProcessFullscreen OmniboxViewWin use; etc.

Update BrowserView::ProcessFullscreen OmniboxViewWin use; etc.

Make OmniboxViewWin code in ProcessFullscreen conditional.
Move OmniboxView util functions to omnibox_views.[h|cc].
Minor refactoring; init OmniboxViewViews::textfield_ to NULL.

BUG=131660, 134263
TEST=Omnibox doesn't trigger crashes after exiting fullscreen.

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=144001

[msw, 2012-06-23 04:24:14]

Hey Scott, please take a look; thanks!

[sky, 2012-06-25 14:27:10]

LGTM

[commit-bot: I haz the power, 2012-06-25 19:09:50]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/msw@chromium.org/10636023/3002

[commit-bot: I haz the power, 2012-06-25 19:09:52]

Failed to apply patch for chrome/browser/ui/views/omnibox/omnibox_view_views.cc:
While running patch -p1 --forward --force;
patching file chrome/browser/ui/views/omnibox/omnibox_view_views.cc
Hunk #1 FAILED at 183.
1 out of 1 hunk FAILED -- saving rejects to file
chrome/browser/ui/views/omnibox/omnibox_view_views.cc.rej

[commit-bot: I haz the power, 2012-06-25 19:33:44]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/msw@chromium.org/10636023/5004

[commit-bot: I haz the power, 2012-06-25 20:49:48]

Change committed as 144001