GTK Themes: Make the omnibox area look more native.

chrome/browser/gtk/browser_toolbar_gtk.h

Index: chrome/browser/gtk/browser_toolbar_gtk.h
diff --git a/chrome/browser/gtk/browser_toolbar_gtk.h b/chrome/browser/gtk/browser_toolbar_gtk.h
index ab86f41233f56e5265e57ed5671b705cd4a7119e..37a2c3f6b60758bea8f0c058540d78bf0d0c7f8d 100644
--- a/chrome/browser/gtk/browser_toolbar_gtk.h
+++ b/chrome/browser/gtk/browser_toolbar_gtk.h
@@ -114,6 +114,9 @@ class BrowserToolbarGtk : public CommandUpdater::CommandObserver,
   // Gtk callback for the "expose-event" signal.
   static gboolean OnToolbarExpose(GtkWidget* widget, GdkEventExpose* e,
                                   BrowserToolbarGtk* toolbar);
+  static gboolean OnLocationHboxExpose(GtkWidget* omnibox_hbox,
+                                       GdkEventExpose* e,
+                                       BrowserToolbarGtk* toolbar);
 
   // Gtk callback for the "clicked" signal.
   static void OnButtonClick(GtkWidget* button, BrowserToolbarGtk* toolbar);