Skip toString-number webkit test because of spurious failure.

BUG=
R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/439933006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22886 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/webkit/webkit.status

@@ -37,6 +37,8 @@
   'exception-with-handler-inside-eval-with-dynamic-scope': [PASS, NO_VARIANTS],
   # TODO(turbofan): We run out of stack earlier on 64-bit for now.
   'fast/js/deep-recursion-test': [PASS, NO_VARIANTS],
+  # TODO(bmeurer): Investigate test failure.
+  'fast/toString-number': [SKIP],
   # TODO(turbofan): Some tests just timeout for now.
   'array-iterate-backwards': [PASS, NO_VARIANTS],
 }],  # ALWAYS