Suppress failure in fast/js/kde/inbuilt_function_tostring.html until the next Blink roll.

TBR=dpranke

Review URL: https://codereview.chromium.org/17068013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@207879 0039d316-1c4b-4281-b951-d872f2087c98

webkit/tools/layout_tests/test_expectations.txt

@@ -30,3 +30,6 @@
 # src/third_party/WebKit/LayoutTests/TestExpectations . Right?)
 #
 # EVERYTHING BELOW THIS LINE WILL BE DELETED AT EVERY WEBKIT DEPS ROLL
+
+# rebaselined in blink r152894; remove on the next roll.
+Bug(senorblanco) fast/js/kde/inbuilt_function_tostring.html [ Failure ]