Improve the look of the Linux omnibox.

Improve the look of the Linux omnibox.

- Paint a border around the input widget, which makes it fit better into the
  toolbar.  A bordered widget is also very nice to have for debugging, so I
  abstracted a small helper for making a bordered bin.

- Improve the results popup by painting with some Pango attributes.  Sort of
  looks awful over NX, but I'm hoping it looks better on a real session.

BUG=8236

[Evan Martin, 2009-03-13 16:33:29]

LGTM

http://codereview.chromium.org/46035/diff/1/3
File base/gfx/gtk_util.h (right):

http://codereview.chromium.org/46035/diff/1/3#newcode36
Line 36: int top, int bottom, int left, int right);
I'm a little skeptical we'll use this too often.  We have custom graphic images
for basically everything in this app.

http://codereview.chromium.org/46035/diff/1/4
File chrome/browser/autocomplete/autocomplete_popup_view_gtk.cc (right):

http://codereview.chromium.org/46035/diff/1/4#newcode81
Line 81: g_free (markup);
extra space

http://codereview.chromium.org/46035/diff/1/6
File chrome/browser/gtk/location_bar_view_gtk.h (right):

http://codereview.chromium.org/46035/diff/1/6#newcode68
Line 68: // This is the widget you probably care about, our inner vbox (inside
the
Who is "you" in this case?  The first half of this comment isn't especially
helpful.