Set the focus ring color to match the Gtk theme focus color.

chrome/browser/tab_contents/tab_contents.cc

Index: chrome/browser/tab_contents/tab_contents.cc
===================================================================
--- chrome/browser/tab_contents/tab_contents.cc	(revision 25076)
+++ chrome/browser/tab_contents/tab_contents.cc	(working copy)
@@ -71,6 +71,7 @@
 
 #if defined(OS_LINUX)
 #include "chrome/browser/gtk/create_application_shortcuts_dialog_gtk.h"
+#include "chrome/browser/gtk/gtk_theme_provider.h"
 #endif  // defined(OS_LINUX)
 
 // Cross-Site Navigations
@@ -289,6 +290,8 @@
                  NotificationService::AllSources());
   registrar_.Add(this, NotificationType::RENDER_WIDGET_HOST_DESTROYED,
                  NotificationService::AllSources());
+  registrar_.Add(this, NotificationType::BROWSER_THEME_CHANGED,
+                 NotificationService::AllSources());
 
   // Keep a global copy of the previous search string (if any).
   static string16 global_last_search = string16();
@@ -2467,6 +2470,12 @@
       break;
     }
 
+    case NotificationType::BROWSER_THEME_CHANGED: {
+#if defined(OS_LINUX)
+      render_view_host()->SyncRendererPrefs();
+#endif
+    }
+
     default:
       NOTREACHED();
   }