Most css1/ tests should wait for basebg.gif to be loaded

third_party/WebKit/LayoutTests/css1/basic/containment.html

Index: third_party/WebKit/LayoutTests/css1/basic/containment.html
diff --git a/third_party/WebKit/LayoutTests/css1/basic/containment.html b/third_party/WebKit/LayoutTests/css1/basic/containment.html
index d2a37bc6509eb1deab56087f69e19c57f3dadec8..161baa9d8713ad481cf1a8fb77e6e3def94c5c0b 100644
--- a/third_party/WebKit/LayoutTests/css1/basic/containment.html
+++ b/third_party/WebKit/LayoutTests/css1/basic/containment.html
@@ -3,7 +3,8 @@
 <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
 <meta http-equiv="Content-Style-Type" content="text/css">
 
-<link rel="stylesheet" type="text/css" media="screen" href="../resources/base.css">
+<script src="../resources/base.js"></script>
+<link rel="stylesheet" type="text/css" href="../resources/base.css">
 <link rel="stylesheet" type="text/css" href="../resources/linktest.css" title="Default SS">
 <link rel="alternate stylesheet" type="text/css" href="../resources/linktest2.css" title="Alternate SS">
 <style type="text/css">
@@ -97,4 +98,4 @@ This sentence should be black.  If it is red, then the browser has inappropriate
 <p class="six">
 This paragraph should be green.
 </p>
-</td></tr></tbody></table></body></html>
+</td></tr></tbody></table></body></html>