Draw background of Linux extension toolstrips.

chrome/browser/renderer_host/render_widget_host_view_gtk.cc

Index: chrome/browser/renderer_host/render_widget_host_view_gtk.cc
diff --git a/chrome/browser/renderer_host/render_widget_host_view_gtk.cc b/chrome/browser/renderer_host/render_widget_host_view_gtk.cc
index 75169715fcc5f2ca4968fbda2d825a2c237fcc28..159e1cdca163f170de6851addf550a19777ce2fb 100644
--- a/chrome/browser/renderer_host/render_widget_host_view_gtk.cc
+++ b/chrome/browser/renderer_host/render_widget_host_view_gtk.cc
@@ -540,6 +540,11 @@ BackingStore* RenderWidgetHostViewGtk::AllocBackingStore(
                           gtk_widget_get_visual(view_.get())->depth);
 }
 
+void RenderWidgetHostViewGtk::SetBackground(const SkBitmap& background) {
+  RenderWidgetHostView::SetBackground(background);
+  host_->Send(new ViewMsg_SetBackground(host_->routing_id(), background));
+}
+
 void RenderWidgetHostViewGtk::Paint(const gfx::Rect& damage_rect) {
   DCHECK(!about_to_validate_and_paint_);