Update bug numbers in test expectations

webkit/tools/layout_tests/test_expectations.txt

Index: webkit/tools/layout_tests/test_expectations.txt
===================================================================
--- webkit/tools/layout_tests/test_expectations.txt	(revision 26221)
+++ webkit/tools/layout_tests/test_expectations.txt	(working copy)
@@ -504,12 +504,12 @@
 // temporary web history. layoutTestController.keepWebHistory() is not
 // implemented in test shell.
 // This is a test tool problem, not a Chrome problem.
-BUG852346 : LayoutTests/fast/history/clicked-link-is-visited.html = FAIL
-BUG842346 : LayoutTests/fast/history/subframe-is-visited.html = FAIL
+BUG21888 : LayoutTests/fast/history/clicked-link-is-visited.html = FAIL
+BUG21888 : LayoutTests/fast/history/subframe-is-visited.html = FAIL
 
 // We don't support NPN_Enumerate, but don't know of any plugin
 // which depends on that functionality.  So we ignore this for beta.
-BUG849056 : LayoutTests/plugins/netscape-enumerate.html = FAIL
+BUG21901 : LayoutTests/plugins/netscape-enumerate.html = FAIL
 
 // This tests the screen's pixel depth, which we don't set on the buildbots
 // so it depends on the users settings.  Making this a broken test for us.