Move json2.js to a common location.

chrome/test/data/sunspider/sunspider-results.html

Index: chrome/test/data/sunspider/sunspider-results.html
===================================================================
--- chrome/test/data/sunspider/sunspider-results.html	(revision 12908)
+++ chrome/test/data/sunspider/sunspider-results.html	(working copy)
@@ -71,13 +71,13 @@
 }
 </script>
 
+<script src="../json2.js"></script>
+<script src="../../ui/sunspider_uitest.js"></script>
+
 <script src="sunspider-test-prefix.js"></script>
 <script src="sunspider-analyze-results.js"></script>
 <script src="sunspider-compare-results.js"></script>
 
-<script src="json2.js"></script>
-<script src="../../ui/sunspider_uitest.js"></script>
-
 <script>
 // At this point the analysis is complete (see sunspider-analyze-results.js).
 automation.SetDone();