Skip long running regression test from r14078.

R=yangguo@chromium.org
BUG=chromium:217858
TEST=mjsunit/regress/regress-crbug-217858

Review URL: https://codereview.chromium.org/13640004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14141 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/mjsunit/mjsunit.status

@@ -44,12 +44,16 @@ regress/regress-524: SKIP
 stack-traces-gc: PASS || FAIL
 
 ##############################################################################
-# Too slow in debug mode with --stress-opt
+# Too slow in debug mode with --stress-opt mode.
 compiler/regress-stacktrace-methods: PASS, SKIP if $mode == debug
 compiler/regress-funcaller: PASS, SKIP if $mode == debug
 regress/regress-2318: PASS, SKIP if $mode == debug
 regress/regress-create-exception: PASS, SKIP if $mode == debug
 
+##############################################################################
+# Too slow in debug mode for GC stress mode.
+regress/regress-crbug-217858: PASS, SKIP if $mode == debug
+
 ##############################################################################
 # These use a built-in that's only present in debug mode. They take
 # too long to run in debug mode on ARM and MIPS.