Move the titlebar background drawing from the titlebar to the

chrome/browser/gtk/browser_window_gtk.cc

Index: chrome/browser/gtk/browser_window_gtk.cc
diff --git a/chrome/browser/gtk/browser_window_gtk.cc b/chrome/browser/gtk/browser_window_gtk.cc
index 4342ff6f19c879225a91c14591f31bc663cc7e77..7bf99323cfefc81d69bb0e4b36fa77ade4100658 100644
--- a/chrome/browser/gtk/browser_window_gtk.cc
+++ b/chrome/browser/gtk/browser_window_gtk.cc
@@ -360,6 +360,8 @@ gboolean BrowserWindowGtk::OnCustomFrameExpose(GtkWidget* widget,
   // TODO(tc): This will have to be dynamic once themes are supported.  Maybe
   // detect the theme install and delete the pointer?
   static NineBox* custom_frame_border = NULL;
+  static NineBox* default_background = NULL;
+  static NineBox* default_background_otr = NULL;
 
   if (window->use_custom_frame_.GetValue()) {
     ThemeProvider* theme_provider =
@@ -376,9 +378,22 @@ gboolean BrowserWindowGtk::OnCustomFrameExpose(GtkWidget* widget,
           IDR_WINDOW_BOTTOM_LEFT_CORNER,
           IDR_WINDOW_BOTTOM_CENTER,
           IDR_WINDOW_BOTTOM_RIGHT_CORNER);
+      default_background = new NineBox(theme_provider,
+          0, IDR_THEME_FRAME, 0, 0, 0, 0, 0, 0, 0);
+      default_background_otr = new NineBox(theme_provider,
+          0, IDR_THEME_FRAME_INCOGNITO, 0, 0, 0, 0, 0, 0, 0);
     }
 
+    // Draw the default background.
     // TODO(tc): Handle maximized windows.
+    cairo_t* cr = gdk_cairo_create(GDK_DRAWABLE(widget->window));
+    cairo_rectangle(cr, event->area.x, event->area.y, event->area.width,
+                    event->area.height);
+    cairo_clip(cr);
+    NineBox* image = window->browser()->profile()->IsOffTheRecord()
+        ? default_background_otr : default_background;
+    image->RenderTopCenterStrip(cr, event->area.x, 0, event->area.width);
+    cairo_destroy(cr);
 
     // TODO(tc): Draw the theme overlay.  The windows code is below.
     // if (theme_provider->HasCustomImage(IDR_THEME_FRAME_OVERLAY)) {